Website rankings
Discover noteworthy websites based on real visits, favorites, and community feedback.
1
Neal.funA collection of interactive web projects by American indie developer Neal Agarwal: dozens of free browser games and visual experiments such as The Password Game, Infinite Craft and The Deep Sea, all instantly playable with no account.46 views0002
Every Noise at OnceA music discovery site that maps Spotify's 6,291 genres as a clickable acoustic scatter plot — every genre name plays a sample and links to artist maps and playlists; the map has been a static snapshot since late 2023.38 views0003
MobbinA Singapore-based UI/UX reference library of screenshots, flows, and motion videos from real, shipped apps and websites, searchable by screen pattern, UI element, and in-screenshot text; the full library and AI search require a paid plan.33 views0004
MuscleWikiMuscleWiki is a free online exercise library. Click any muscle on its interactive body map to see matching exercises with short filmed video demos and step-by-step instructions — no account needed.44 views0005
ExcalidrawAn open-source virtual whiteboard with a hand-drawn feel — sketch diagrams for free without signing up, with real-time collaboration and end-to-end encryption.38 views0006
The Metropolitan Museum of Art CollectionThe online collection of The Met in New York: over 492,000 public-domain artwork images and metadata for the entire collection released under CC0, free to search and download, with a keyless open API and a weekly-updated CSV dataset.51 views0007HowLongToBeatCrowdsourced database of video game completion times by playstyle — main story, main plus extras, completionist — with community ratings and backlog tracking. Online since 2011, owned by IGN since 2021; 92.5K releases as of 2026-09-02.17 views0008
Stellarium WebThe browser-based edition of the open-source Stellarium planetarium: nothing to install, just open a page to see a real-time sky for any time and place, with planets, constellations, deep-sky objects, and upcoming celestial events.22 views0009
Digital Dunhuang (数字敦煌)The Dunhuang Academy's official digitization project; its resource library freely publishes whole-cave high-resolution images and panoramas of 30 caves, alongside an open material library, in Chinese and English.33 views00010
LibriVoxA volunteer-narrated library of free public domain audiobooks, offering more than twenty thousand completed titles for streaming and download, with all recordings dedicated to the public domain in the United States.18 views00011
Shidian GujiA free digital reading and editing platform for pre-modern Chinese books by Douyin Group (ByteDance) and Peking University, offering full-text search, page-image comparison and machine-assisted translation across 73,000+ titles.27 views00012Minimal GalleryA curated web design inspiration gallery running since 2013, hand-picking submitted websites, templates, and tools, with desktop and mobile screenshots for every entry — free to browse, no account required.15 views00013
ZooniverseThe world's largest people-powered research platform — volunteers classify real research data in the browser, from galaxies and penguins to historical manuscripts, with most projects open without registration.41 views00014Fonts In UseAn independent public archive of typography that indexes real-world uses of typefaces by font, industry, format, and period, with public submissions reviewed by an editorial team.14 views00015
ReferoRefero is a reference library of real product interfaces: 142,000+ screenshots from 400+ web and iOS products, searchable by page type, user flow, UX pattern, and UI element.12 views00016
NowcoderA Chinese job-hunting prep platform for new graduates and programmers, combining real company written tests, online coding practice and contests, an interview-experience community, and campus recruiting info.32 views00017
Zdic (汉典)Free online Chinese dictionary launched in 2004: each entry combines the Kangxi Dictionary, Shuowen Jiezi, Mandarin Dictionary, phonology, dialects, and glyph origins on one page, plus classical text, poetry, and calligraphy sub-sites.22 views00018
Online-Go.com (OGS)A free online Go (baduk) server in the browser: real-time and correspondence games, spectating and game study, roughly 59,000 user-made tsumego puzzles, an interactive beginner course and tournaments, with an AGPL-licensed web client.19 views00019
Hacker NewsY Combinator's technology news community, created by Paul Graham in 2007, where users submit links and text posts that are ranked by votes and time decay; known for its minimalist interface and reading without registration.19 views00020
Xiachufang (下厨房)A Chinese recipe-sharing community launched in 2011, where home cooks publish step-by-step photo recipes and post their results. Its counter shows 3.58 million recipes; free to browse without an account, plus membership and courses.19 views00021
LeetCode China (力扣)LeetCode China (leetcode.cn) is the Chinese edition of the LeetCode online judge, offering thousands of algorithm problems, online judging, weekly contests, and company interview question banks in a Chinese-first interface and community.18 views00022
PhET Interactive SimulationsFree interactive science and math simulations from the University of Colorado Boulder, covering physics, chemistry, biology and more, usable online or offline, translated into 100+ languages, with open-source code.18 views00023
WindyWindy is an interactive global weather visualization platform from a Czech team, layering wind, radar, satellite and air quality on an animated map, with ECMWF, GFS and ICON model comparison. Core features are free, no account required.18 views00024
MarineTrafficGlobal real-time vessel tracking platform built on AIS, launched in 2007 as a University of the Aegean project and acquired by Kpler in 2023; live positions and the vessel database are free, satellite AIS and track history are paid.18 views00025bilibiliChinese video community defined by its danmaku bullet comments: creator-made PUGV videos, licensed anime, films, and documentaries, plus live streaming and games. Founded in 2009 as Mikufans, listed on Nasdaq and HKEX; 371M MAU in Q2 2026.36 views00026
PhotopeaPhotopea is a free browser-based image editor maintained by solo developer Ivan Kutskir since 2013. It supports layers, masks, and PSD along with many other design formats, processes files locally on your device, and requires no account.15 views00027
Standard EbooksVolunteer-driven project producing carefully typeset, proofread public domain ebooks from Project Gutenberg transcriptions with public domain cover art; every title is free in epub, azw3, and kepub, dedicated to the public domain.15 views00028
ZhihuChina's largest Q&A-inspired content community (per the company), built around long-form answers, columns, roundtables, the paid Yanxuan membership and the Zhida AI search. Homepage and hot list require sign-in; Explore pages are public.32 views00029
Kling AIKuaishou's AI video generation platform: text-to-video, image-to-video, native 4K, motion transfer and digital humans in browser and mobile apps, plus a per-second API. Launched June 2024; 100M+ users as of June 2026.7 views00030
MonkeytypeA free, open-source typing test and practice website known for its minimal design and unusually deep customization, with multiple test modes, hundreds of language word lists, and optional accounts for tracking progress.13 views00031
SuperCookCheck off the ingredients you already have, and get recipes you can cook right now — each result links out to the source site. Free and registration-free reverse recipe search.28 views00032
RSSHubAn open-source RSS generator created by DIYgod in 2018 that turns websites without native feeds into standard RSS sources; the code is on GitHub under AGPL-3.0, with an official demo instance and encouragement to self-host.28 views00033
Checklist DesignA curated library of interface design checklists by designer George Hatzis, covering websites, web apps, mobile, design systems and flows. Free with no sign-up, plus a Figma plugin with AI reviews and an open-source AI agent skill.10 views00034
roadmap.shA community-maintained collection of developer learning roadmaps: 80+ career and technology paths as clickable skill trees, each node pairing a brief with curated links; free, with content updates flowing through a public GitHub repository.10 views00035
IMSLPA wiki-based library of public domain sheet music where volunteers submit scans and newly typeset editions that pass copyright review, with each file tagged separately for Canada, the US and the EU. Free to browse and download.23 views00036LandbookLandbook is a human-curated website design gallery updated daily with full-page screenshots, plus collections for sections, motion, and OG images, and a template marketplace. Browsing is free with ads; Pro removes ads and unlocks filtering.9 views00037
Project GutenbergThe oldest eBook library on the Internet, founded in 1971, offering works whose U.S. copyright has expired — free, no registration, readable online or downloadable as EPUB, Kindle, and plain text.19 views00038
Google ScholarGoogle's free scholarly search engine, launched in 2004, indexing papers, theses, books, preprints, patents and US case law across publishers, with citation tracing, author profiles and venue metrics. Search needs no account.14 views00039
IT ToolsAn open-source, free collection of 86 online tools for developers and IT professionals: hashing, encoding, format conversion and network calculators, all running in the browser. No signup; self-hostable via one Docker command.13 views00040Recent (formerly Godly)Recent is a daily-curated design inspiration platform covering websites, interfaces, branding, and motion, with tech-stack annotations per entry. Its predecessor was Godly, a web design gallery from 2021; godly.website now redirects here.13 views00041
DuolingoA free, gamified learning platform opened to the public in 2012, officially listing 40+ languages plus math, music and chess courses; it also runs the Duolingo English Test, accepted by more than 6,500 institutions worldwide.12 views00042
freeCodeCampA donor-supported nonprofit offering free interactive coding courses, project-based certifications, a tech publication and a community forum — all content and certificates free.11 views00043
Metaso (秘塔AI搜索)A Chinese AI search engine by Shanghai Metaso that answers questions with ad-free, source-cited structured summaries, including academic search and a free Deep Research mode.11 views00044
ExercismA free, ad-free coding practice and mentoring platform with 83 language tracks and 8,600+ exercises. Solve in the browser or via CLI, get automated analysis, and request free mentor feedback. Run by a UK not-for-profit; account required.11 views00045
BlueskyBluesky is a decentralized microblogging network from US public benefit corporation Bluesky Social PBC, built on the open AT Protocol: domain handles, an open feed marketplace, portable accounts. Free and ad-free; 44M+ users as of May 2026.10 views00046
MSD Manuals (Consumer Version)The free online consumer edition of the MSD Manuals, a medical reference first published in 1899. Written and reviewed by medical experts, no registration or ads, with an official Chinese edition at msdmanuals.cn.10 views00047
Flightradar24A Swedish flight-tracking service that plots live air traffic on a map using a crowdsourced network of 55,000+ ADS-B receivers plus satellite and radar data. Free to use, with paid tiers for longer history and aviation weather layers.10 views00048
WhoSampledLondon-born database, launched in 2008, mapping how songs connect through samples, interpolations, covers, and remixes; entries are community-submitted and human-moderated, 1.37M+ songs as of 2026-09-02. Owned by Spotify since 2025.10 views00049Connected PapersVisual literature-discovery tool that turns one seed paper into a graph of similar papers, computed from co-citation and bibliographic coupling over Semantic Scholar's corpus. Free accounts get 5 graphs a month; subscriptions are unlimited.43 views00050
Internet ArchiveA US non-profit digital library known for the Wayback Machine web archive, with free collections of texts, audio, video, and software.40 views00051TypewolfTypewolf is an independent typography reference showcasing one well-typeset website per day with every font identified, plus a thousand-plus font profiles, popularity rankings, and free-alternative guides.9 views00052
Lapa NinjaA landing page design archive curated since 2015, keeping 7,300+ real pages as full-page screenshots, scroll-through videos, and font and color metadata. Browsing and search are free; accounts add Boards, and Pro removes limits.7 views00053
WikipediaA free, multilingual online encyclopedia that anyone can edit, launched in January 2001 and sustained by reader donations to the nonprofit Wikimedia Foundation; as of 2026-09-02 it spans 348 language editions with over 68 million articles.7 views00054Radio GardenA non-profit research project for discovering live radio worldwide on a rotatable 3D globe, listing more than 40,000 channels as of 2024.28 views00055
earthAn animated globe by Tokyo engineer Cameron Beccario, online since 2013, that turns NOAA, NASA and Copernicus forecasts into flowing maps of wind, temperature, pressure, currents, waves, aerosols and aurora, zoomable to city level.28 views00056
AwwwardsA web design award platform run by Awwwards Online SL since 2009. An international jury scores submitted sites on design, usability, creativity, and content, up to Site of the Year. Browsing is free; submission is paid.27 views00057
Laws of UXA UX psychology reference by product designer Jon Yablonski: 30 psychology laws relevant to interface design as visual cards, each with design takeaways, real product examples, and cited academic origins. Free, in five languages.6 views00058
DribbbleDribbble is a designer community launched in 2009 around bite-size "shots" of design work, with a freelance and job marketplace on top. Majority-owned by Tiny since 2017; browsing is free, publishing requires approval or an invite.5 views00059
Page FlowsA library of recorded user flows from 300+ real apps across iOS, Android, web and email, with step-by-step annotations and searchable screenshots. Some flows are free to watch; full access requires a subscription.5 views00060
SiteinspireA web design inspiration gallery personally curated by Daniel Howells since 2009, featuring over 8,000 real, live websites browsable by style, type, subject, and platform, with all entries selected on merit rather than payment.5 views00061
LandingfolioA landing page design reference site by Danny Postma, run by Postcrafts (Singapore) since 2015: a curated gallery of real landing pages plus 800+ copy-paste Tailwind, Webflow and Figma components. Browsing is free; full access is paid.5 views00062
UnsplashUnsplash is a Canadian stock photo platform with 8.7 million free, commercially usable high-resolution photos and illustrations, no account needed to download, plus a developer API and paid Unsplash+ tier; owned by Getty Images since 2021.21 views00063
LetterboxdA New Zealand–founded social network for film lovers since 2011: log films in a diary, rate on a five-star scale with halves, write reviews, build lists, and check where to stream. Free with ads; Pro/Patron tiers remove ads and add stats.21 views00064National Database of Laws and RegulationsChina's official statute search platform, run by the NPC Standing Committee's General Office. Free, registration-free access to laws, regulations and judicial interpretations, with validity labels and gazette-version downloads.21 views00065
Can I UseA free reference for checking browser support of front-end web technologies, with per-version support tables, usage statistics, known issues and openly licensed data.20 views00066
Hugging FaceCommunity platform hosting open AI models, datasets, and demo apps, with roughly 3 million public model repositories plus on-demand inference APIs and GPU compute.18 views00067
TypstTypst is a markup-based typesetting system and collaborative online editor from a Berlin team, matching LaTeX's power with simpler syntax, instant preview, and helpful errors; the compiler is open source under Apache-2.0.18 views00068
Chinese Text ProjectOpen-access digital library of premodern Chinese texts maintained by Donald Sturgeon since 2006: over 30,000 titles focused on pre-Qin and Han works, with aligned Chinese-English parallel texts, a dictionary, source scans, and an open API.17 views00069
DiscogsA crowdsourced record database with an integrated second-hand marketplace, online since 2000; as of September 2026 it lists more than 19 million releases, plus collection tools, a public API, and CC0 data exports.17 views00070
TEDA nonprofit-run video platform built around short conference talks. As of 2026-09-02 the TED.com library indexes 7,641 free talks with volunteer-made subtitles in 115 languages, alongside the TEDx network, TED-Ed lessons, and 25+ podcasts.17 views00071
LichessA free, ad-free, open-source online chess platform with games at every time control, 8 variants, tactical puzzles, engine analysis, tournament broadcasts and collaborative study tools, run by a French non-profit association.16 views00072
DeepLA language AI platform run by DeepL SE in Germany, best known for its neural machine translator, alongside the DeepL Write assistant, DeepL Voice speech translation, and a developer API, with free and Pro tiers.16 views00073
Shenyan Dayi (深言达意)Shenyan Dayi is a free writing aid from DeepLang AI: describe what you mean and get matching Chinese words, idioms, quotes and example sentences, with cross-lingual English lookup. It evolved from THUNLP's WantWords reverse dictionary.16 views00074
MyAnimeListLaunched in 2004, MyAnimeList is the largest English-language anime and manga database and community: user-maintained entries, 1–10 scoring, twice-daily weighted rankings, and an official API. Owned by Tokyo-based Gaudiy since May 2025.16 views00075
ScratchA free block-based coding platform created at the MIT Media Lab and now run by the nonprofit Scratch Foundation. Build games, animations, and stories in the browser and share them with a global creative community.15 views00076
PairDropOpen-source, browser-based file transfer: devices on the same network discover each other automatically and send files peer-to-peer over WebRTC; pairing and temporary rooms extend transfers across networks. No signup, no installation.15 views00077
GitHubThe largest code-hosting and collaboration platform, launched in April 2008 and a Microsoft subsidiary since 2018; as of 2026-09-02 it serves 225M+ developers and 800M+ repositories, with free repos plus Actions and Copilot.15 views00078
KaggleGoogle's data science and machine learning competition platform and community, founded by Anthony Goldbloom in 2010 and acquired by Google in 2017, offering competitions, public datasets, cloud notebooks and free courses.15 views00079
timeanddate.comA free online time-and-date toolkit run by Norway's Time and Date AS since 1998: world clocks, time zone conversion, calendars and holidays, sun and moon astronomy, eclipses and weather. No sign-up; optional ad-free subscription.15 views00080
BackloggdA free video game tracker and review community run by a solo developer — log playthroughs, rate, review and build lists on IGDB data, 'Letterboxd for games.'3 views00081
Have I Been PwnedA data breach lookup service by security researcher Troy Hunt. Enter an email address to see whether it appears in known breaches, check passwords against leaked corpora, and get breach alerts. Core searches are free and need no account.14 views00082MIT OpenCourseWareMIT's project to publish its course materials free online: syllabi, lecture notes, assignments, exams, and video lectures with no registration. Announced in 2001, launched in 2002; 2,585 courses as of 2026-09-02, all under CC BY-NC-SA 4.0.14 views00083
IMDbAmazon-owned database of movies, TV shows, video games and the people behind them, covering 12M+ titles and 16M+ names, best known for weighted user ratings and Top 250 charts. Free and ad-supported; most data is user-contributed.14 views00084
iNaturalistA nonprofit citizen science platform for biodiversity: photograph wild species to get computer vision suggestions and community identifications; research-grade observations flow into databases such as GBIF. Free, with mobile apps.13 views00085
PerplexityPerplexity is an AI answer engine that responds to questions with direct, source-cited answers instead of a list of links. Core features are free; Pro and Max subscriptions unlock stronger models and higher limits.13 views00086
arXivA free, open-access preprint archive hosting over three million scholarly articles across eight subject areas including physics, mathematics and computer science. Reading requires no registration; content is not peer reviewed.13 views00087
Terms of Service; Didn't Read (ToS;DR)A nonprofit community project, online since 2012, that breaks major sites' terms of service and privacy policies into plain-language "points" and grades each service A–E, published as open data with a browser extension and public API.13 views00088
PrintablesA free 3D printing model library and maker community run by Czech printer manufacturer Prusa Research: over a million models downloadable without an account, per-model license labels, and Prusameters points redeemable for real filament.13 views00089
BoardGameGeekBoard game database and community launched in January 2000, built almost entirely by its users: 150,000+ games with ratings, reviews, and images for ~4 million registered users, plus the BGG Rank, the hobby's most cited leaderboard.13 views00090
DesmosA free online graphing calculator and math tool suite from Desmos Studio, covering function plotting, geometry, scientific and matrix calculation, 3D graphs and a Notebook, with sliders, sharing and built-in accessibility.12 views00091
iconfontA Chinese vector icon platform run by Alibaba's Alimama experience team, offering icon search, multi-format downloads, icon-font generation and team project workflows, plus illustrations, Lottie animations and official fonts.12 views00092
OverleafA collaborative online LaTeX editor that runs entirely in the browser, created as WriteLaTeX in 2011 and merged with ShareLaTeX in 2017; the company reports over 20 million users.12 views00093
BandcampOnline record store and music community where artists and labels sell digital music, vinyl, CDs, cassettes, and merch directly to fans. Launched in 2008, it takes 15% on digital and 10% on physical sales; on average 82% reaches artists.12 views00094
ForvoA crowdsourced pronunciation dictionary with native-speaker recordings for nearly 6 million words in 430+ languages, filterable by accent with community voting. Listening is free; contributing requires an account; non-commercial use only.12 views00095
GeoGuessrGeoGuessr drops players into a random Google Street View panorama and has them locate it on a world map using clues like road signs and license plates. Free accounts get only the Daily Challenge; other modes need a subscription.11 views00096
GammaAn AI-powered content design platform that turns a prompt, outline, or imported file into presentations, documents, webpages, and social assets, with export to PPT/PDF and one-click web publishing.11 views00097
MDN Web DocsFree, open-source web platform documentation maintained by Mozilla: HTML, CSS, JavaScript, Web APIs, and HTTP, with per-page browser compatibility tables. Online since 2005, edited on GitHub with Open Web Docs and volunteers.11 views00098
NumbeoA crowdsourced cost-of-living and quality-of-life database launched in 2009, covering prices, rents and purchasing-power indices for 12,000+ cities. Free to browse with a comparison tool and paid API; data is not official statistics.11 views00099
GoodreadsAmazon's social cataloging site for books, launched in 2007 and reporting more than 150 million members by 2023, known for bookshelves, ratings, reviews, and the annual Reading Challenge.11 views000100VirusTotalFree online scanner checking files, URLs, domains, and IPs against 70+ antivirus engines and blocklists at once; launched in 2004, part of Google since 2012. Uploads are shared with the security community — don't submit confidential files.11 views000
Neal.funA collection of interactive web projects by American indie developer Neal Agarwal: dozens of free browser games and visual experiments such as The Password Game, Infinite Craft and The Deep Sea, all instantly playable with no account.46 views0002Every Noise at OnceA music discovery site that maps Spotify's 6,291 genres as a clickable acoustic scatter plot — every genre name plays a sample and links to artist maps and playlists; the map has been a static snapshot since late 2023.38 views0003MobbinA Singapore-based UI/UX reference library of screenshots, flows, and motion videos from real, shipped apps and websites, searchable by screen pattern, UI element, and in-screenshot text; the full library and AI search require a paid plan.33 views0004MuscleWikiMuscleWiki is a free online exercise library. Click any muscle on its interactive body map to see matching exercises with short filmed video demos and step-by-step instructions — no account needed.44 views0005ExcalidrawAn open-source virtual whiteboard with a hand-drawn feel — sketch diagrams for free without signing up, with real-time collaboration and end-to-end encryption.38 views0006The Metropolitan Museum of Art CollectionThe online collection of The Met in New York: over 492,000 public-domain artwork images and metadata for the entire collection released under CC0, free to search and download, with a keyless open API and a weekly-updated CSV dataset.51 views0007HowLongToBeatCrowdsourced database of video game completion times by playstyle — main story, main plus extras, completionist — with community ratings and backlog tracking. Online since 2011, owned by IGN since 2021; 92.5K releases as of 2026-09-02.17 views0008Stellarium WebThe browser-based edition of the open-source Stellarium planetarium: nothing to install, just open a page to see a real-time sky for any time and place, with planets, constellations, deep-sky objects, and upcoming celestial events.22 views0009Digital Dunhuang (数字敦煌)The Dunhuang Academy's official digitization project; its resource library freely publishes whole-cave high-resolution images and panoramas of 30 caves, alongside an open material library, in Chinese and English.33 views00010LibriVoxA volunteer-narrated library of free public domain audiobooks, offering more than twenty thousand completed titles for streaming and download, with all recordings dedicated to the public domain in the United States.18 views00011Shidian GujiA free digital reading and editing platform for pre-modern Chinese books by Douyin Group (ByteDance) and Peking University, offering full-text search, page-image comparison and machine-assisted translation across 73,000+ titles.27 views00012Minimal GalleryA curated web design inspiration gallery running since 2013, hand-picking submitted websites, templates, and tools, with desktop and mobile screenshots for every entry — free to browse, no account required.15 views00013ZooniverseThe world's largest people-powered research platform — volunteers classify real research data in the browser, from galaxies and penguins to historical manuscripts, with most projects open without registration.41 views00014Fonts In UseAn independent public archive of typography that indexes real-world uses of typefaces by font, industry, format, and period, with public submissions reviewed by an editorial team.14 views00015ReferoRefero is a reference library of real product interfaces: 142,000+ screenshots from 400+ web and iOS products, searchable by page type, user flow, UX pattern, and UI element.12 views00016NowcoderA Chinese job-hunting prep platform for new graduates and programmers, combining real company written tests, online coding practice and contests, an interview-experience community, and campus recruiting info.32 views00017Zdic (汉典)Free online Chinese dictionary launched in 2004: each entry combines the Kangxi Dictionary, Shuowen Jiezi, Mandarin Dictionary, phonology, dialects, and glyph origins on one page, plus classical text, poetry, and calligraphy sub-sites.22 views00018Online-Go.com (OGS)A free online Go (baduk) server in the browser: real-time and correspondence games, spectating and game study, roughly 59,000 user-made tsumego puzzles, an interactive beginner course and tournaments, with an AGPL-licensed web client.19 views00019Hacker NewsY Combinator's technology news community, created by Paul Graham in 2007, where users submit links and text posts that are ranked by votes and time decay; known for its minimalist interface and reading without registration.19 views00020Xiachufang (下厨房)A Chinese recipe-sharing community launched in 2011, where home cooks publish step-by-step photo recipes and post their results. Its counter shows 3.58 million recipes; free to browse without an account, plus membership and courses.19 views00021LeetCode China (力扣)LeetCode China (leetcode.cn) is the Chinese edition of the LeetCode online judge, offering thousands of algorithm problems, online judging, weekly contests, and company interview question banks in a Chinese-first interface and community.18 views00022PhET Interactive SimulationsFree interactive science and math simulations from the University of Colorado Boulder, covering physics, chemistry, biology and more, usable online or offline, translated into 100+ languages, with open-source code.18 views00023WindyWindy is an interactive global weather visualization platform from a Czech team, layering wind, radar, satellite and air quality on an animated map, with ECMWF, GFS and ICON model comparison. Core features are free, no account required.18 views00024MarineTrafficGlobal real-time vessel tracking platform built on AIS, launched in 2007 as a University of the Aegean project and acquired by Kpler in 2023; live positions and the vessel database are free, satellite AIS and track history are paid.18 views00025bilibiliChinese video community defined by its danmaku bullet comments: creator-made PUGV videos, licensed anime, films, and documentaries, plus live streaming and games. Founded in 2009 as Mikufans, listed on Nasdaq and HKEX; 371M MAU in Q2 2026.36 views00026PhotopeaPhotopea is a free browser-based image editor maintained by solo developer Ivan Kutskir since 2013. It supports layers, masks, and PSD along with many other design formats, processes files locally on your device, and requires no account.15 views00027Standard EbooksVolunteer-driven project producing carefully typeset, proofread public domain ebooks from Project Gutenberg transcriptions with public domain cover art; every title is free in epub, azw3, and kepub, dedicated to the public domain.15 views00028ZhihuChina's largest Q&A-inspired content community (per the company), built around long-form answers, columns, roundtables, the paid Yanxuan membership and the Zhida AI search. Homepage and hot list require sign-in; Explore pages are public.32 views00029Kling AIKuaishou's AI video generation platform: text-to-video, image-to-video, native 4K, motion transfer and digital humans in browser and mobile apps, plus a per-second API. Launched June 2024; 100M+ users as of June 2026.7 views00030MonkeytypeA free, open-source typing test and practice website known for its minimal design and unusually deep customization, with multiple test modes, hundreds of language word lists, and optional accounts for tracking progress.13 views00031SuperCookCheck off the ingredients you already have, and get recipes you can cook right now — each result links out to the source site. Free and registration-free reverse recipe search.28 views00032RSSHubAn open-source RSS generator created by DIYgod in 2018 that turns websites without native feeds into standard RSS sources; the code is on GitHub under AGPL-3.0, with an official demo instance and encouragement to self-host.28 views00033Checklist DesignA curated library of interface design checklists by designer George Hatzis, covering websites, web apps, mobile, design systems and flows. Free with no sign-up, plus a Figma plugin with AI reviews and an open-source AI agent skill.10 views00034roadmap.shA community-maintained collection of developer learning roadmaps: 80+ career and technology paths as clickable skill trees, each node pairing a brief with curated links; free, with content updates flowing through a public GitHub repository.10 views00035IMSLPA wiki-based library of public domain sheet music where volunteers submit scans and newly typeset editions that pass copyright review, with each file tagged separately for Canada, the US and the EU. Free to browse and download.23 views00036LandbookLandbook is a human-curated website design gallery updated daily with full-page screenshots, plus collections for sections, motion, and OG images, and a template marketplace. Browsing is free with ads; Pro removes ads and unlocks filtering.9 views00037Project GutenbergThe oldest eBook library on the Internet, founded in 1971, offering works whose U.S. copyright has expired — free, no registration, readable online or downloadable as EPUB, Kindle, and plain text.19 views00038Google ScholarGoogle's free scholarly search engine, launched in 2004, indexing papers, theses, books, preprints, patents and US case law across publishers, with citation tracing, author profiles and venue metrics. Search needs no account.14 views00039IT ToolsAn open-source, free collection of 86 online tools for developers and IT professionals: hashing, encoding, format conversion and network calculators, all running in the browser. No signup; self-hostable via one Docker command.13 views00040Recent (formerly Godly)Recent is a daily-curated design inspiration platform covering websites, interfaces, branding, and motion, with tech-stack annotations per entry. Its predecessor was Godly, a web design gallery from 2021; godly.website now redirects here.13 views00041DuolingoA free, gamified learning platform opened to the public in 2012, officially listing 40+ languages plus math, music and chess courses; it also runs the Duolingo English Test, accepted by more than 6,500 institutions worldwide.12 views00042freeCodeCampA donor-supported nonprofit offering free interactive coding courses, project-based certifications, a tech publication and a community forum — all content and certificates free.11 views00043Metaso (秘塔AI搜索)A Chinese AI search engine by Shanghai Metaso that answers questions with ad-free, source-cited structured summaries, including academic search and a free Deep Research mode.11 views00044ExercismA free, ad-free coding practice and mentoring platform with 83 language tracks and 8,600+ exercises. Solve in the browser or via CLI, get automated analysis, and request free mentor feedback. Run by a UK not-for-profit; account required.11 views00045BlueskyBluesky is a decentralized microblogging network from US public benefit corporation Bluesky Social PBC, built on the open AT Protocol: domain handles, an open feed marketplace, portable accounts. Free and ad-free; 44M+ users as of May 2026.10 views00046MSD Manuals (Consumer Version)The free online consumer edition of the MSD Manuals, a medical reference first published in 1899. Written and reviewed by medical experts, no registration or ads, with an official Chinese edition at msdmanuals.cn.10 views00047Flightradar24A Swedish flight-tracking service that plots live air traffic on a map using a crowdsourced network of 55,000+ ADS-B receivers plus satellite and radar data. Free to use, with paid tiers for longer history and aviation weather layers.10 views00048WhoSampledLondon-born database, launched in 2008, mapping how songs connect through samples, interpolations, covers, and remixes; entries are community-submitted and human-moderated, 1.37M+ songs as of 2026-09-02. Owned by Spotify since 2025.10 views00049Connected PapersVisual literature-discovery tool that turns one seed paper into a graph of similar papers, computed from co-citation and bibliographic coupling over Semantic Scholar's corpus. Free accounts get 5 graphs a month; subscriptions are unlimited.43 views00050Internet ArchiveA US non-profit digital library known for the Wayback Machine web archive, with free collections of texts, audio, video, and software.40 views00051TypewolfTypewolf is an independent typography reference showcasing one well-typeset website per day with every font identified, plus a thousand-plus font profiles, popularity rankings, and free-alternative guides.9 views00052Lapa NinjaA landing page design archive curated since 2015, keeping 7,300+ real pages as full-page screenshots, scroll-through videos, and font and color metadata. Browsing and search are free; accounts add Boards, and Pro removes limits.7 views00053WikipediaA free, multilingual online encyclopedia that anyone can edit, launched in January 2001 and sustained by reader donations to the nonprofit Wikimedia Foundation; as of 2026-09-02 it spans 348 language editions with over 68 million articles.7 views00054Radio GardenA non-profit research project for discovering live radio worldwide on a rotatable 3D globe, listing more than 40,000 channels as of 2024.28 views00055earthAn animated globe by Tokyo engineer Cameron Beccario, online since 2013, that turns NOAA, NASA and Copernicus forecasts into flowing maps of wind, temperature, pressure, currents, waves, aerosols and aurora, zoomable to city level.28 views00056AwwwardsA web design award platform run by Awwwards Online SL since 2009. An international jury scores submitted sites on design, usability, creativity, and content, up to Site of the Year. Browsing is free; submission is paid.27 views00057Laws of UXA UX psychology reference by product designer Jon Yablonski: 30 psychology laws relevant to interface design as visual cards, each with design takeaways, real product examples, and cited academic origins. Free, in five languages.6 views00058DribbbleDribbble is a designer community launched in 2009 around bite-size "shots" of design work, with a freelance and job marketplace on top. Majority-owned by Tiny since 2017; browsing is free, publishing requires approval or an invite.5 views00059Page FlowsA library of recorded user flows from 300+ real apps across iOS, Android, web and email, with step-by-step annotations and searchable screenshots. Some flows are free to watch; full access requires a subscription.5 views00060SiteinspireA web design inspiration gallery personally curated by Daniel Howells since 2009, featuring over 8,000 real, live websites browsable by style, type, subject, and platform, with all entries selected on merit rather than payment.5 views00061LandingfolioA landing page design reference site by Danny Postma, run by Postcrafts (Singapore) since 2015: a curated gallery of real landing pages plus 800+ copy-paste Tailwind, Webflow and Figma components. Browsing is free; full access is paid.5 views00062UnsplashUnsplash is a Canadian stock photo platform with 8.7 million free, commercially usable high-resolution photos and illustrations, no account needed to download, plus a developer API and paid Unsplash+ tier; owned by Getty Images since 2021.21 views00063LetterboxdA New Zealand–founded social network for film lovers since 2011: log films in a diary, rate on a five-star scale with halves, write reviews, build lists, and check where to stream. Free with ads; Pro/Patron tiers remove ads and add stats.21 views00064National Database of Laws and RegulationsChina's official statute search platform, run by the NPC Standing Committee's General Office. Free, registration-free access to laws, regulations and judicial interpretations, with validity labels and gazette-version downloads.21 views00065Can I UseA free reference for checking browser support of front-end web technologies, with per-version support tables, usage statistics, known issues and openly licensed data.20 views00066Hugging FaceCommunity platform hosting open AI models, datasets, and demo apps, with roughly 3 million public model repositories plus on-demand inference APIs and GPU compute.18 views00067TypstTypst is a markup-based typesetting system and collaborative online editor from a Berlin team, matching LaTeX's power with simpler syntax, instant preview, and helpful errors; the compiler is open source under Apache-2.0.18 views00068Chinese Text ProjectOpen-access digital library of premodern Chinese texts maintained by Donald Sturgeon since 2006: over 30,000 titles focused on pre-Qin and Han works, with aligned Chinese-English parallel texts, a dictionary, source scans, and an open API.17 views00069DiscogsA crowdsourced record database with an integrated second-hand marketplace, online since 2000; as of September 2026 it lists more than 19 million releases, plus collection tools, a public API, and CC0 data exports.17 views00070TEDA nonprofit-run video platform built around short conference talks. As of 2026-09-02 the TED.com library indexes 7,641 free talks with volunteer-made subtitles in 115 languages, alongside the TEDx network, TED-Ed lessons, and 25+ podcasts.17 views00071LichessA free, ad-free, open-source online chess platform with games at every time control, 8 variants, tactical puzzles, engine analysis, tournament broadcasts and collaborative study tools, run by a French non-profit association.16 views00072DeepLA language AI platform run by DeepL SE in Germany, best known for its neural machine translator, alongside the DeepL Write assistant, DeepL Voice speech translation, and a developer API, with free and Pro tiers.16 views00073Shenyan Dayi (深言达意)Shenyan Dayi is a free writing aid from DeepLang AI: describe what you mean and get matching Chinese words, idioms, quotes and example sentences, with cross-lingual English lookup. It evolved from THUNLP's WantWords reverse dictionary.16 views00074MyAnimeListLaunched in 2004, MyAnimeList is the largest English-language anime and manga database and community: user-maintained entries, 1–10 scoring, twice-daily weighted rankings, and an official API. Owned by Tokyo-based Gaudiy since May 2025.16 views00075ScratchA free block-based coding platform created at the MIT Media Lab and now run by the nonprofit Scratch Foundation. Build games, animations, and stories in the browser and share them with a global creative community.15 views00076PairDropOpen-source, browser-based file transfer: devices on the same network discover each other automatically and send files peer-to-peer over WebRTC; pairing and temporary rooms extend transfers across networks. No signup, no installation.15 views00077GitHubThe largest code-hosting and collaboration platform, launched in April 2008 and a Microsoft subsidiary since 2018; as of 2026-09-02 it serves 225M+ developers and 800M+ repositories, with free repos plus Actions and Copilot.15 views00078KaggleGoogle's data science and machine learning competition platform and community, founded by Anthony Goldbloom in 2010 and acquired by Google in 2017, offering competitions, public datasets, cloud notebooks and free courses.15 views00079timeanddate.comA free online time-and-date toolkit run by Norway's Time and Date AS since 1998: world clocks, time zone conversion, calendars and holidays, sun and moon astronomy, eclipses and weather. No sign-up; optional ad-free subscription.15 views00080BackloggdA free video game tracker and review community run by a solo developer — log playthroughs, rate, review and build lists on IGDB data, 'Letterboxd for games.'3 views00081Have I Been PwnedA data breach lookup service by security researcher Troy Hunt. Enter an email address to see whether it appears in known breaches, check passwords against leaked corpora, and get breach alerts. Core searches are free and need no account.14 views00082MIT OpenCourseWareMIT's project to publish its course materials free online: syllabi, lecture notes, assignments, exams, and video lectures with no registration. Announced in 2001, launched in 2002; 2,585 courses as of 2026-09-02, all under CC BY-NC-SA 4.0.14 views00083IMDbAmazon-owned database of movies, TV shows, video games and the people behind them, covering 12M+ titles and 16M+ names, best known for weighted user ratings and Top 250 charts. Free and ad-supported; most data is user-contributed.14 views00084iNaturalistA nonprofit citizen science platform for biodiversity: photograph wild species to get computer vision suggestions and community identifications; research-grade observations flow into databases such as GBIF. Free, with mobile apps.13 views00085PerplexityPerplexity is an AI answer engine that responds to questions with direct, source-cited answers instead of a list of links. Core features are free; Pro and Max subscriptions unlock stronger models and higher limits.13 views00086arXivA free, open-access preprint archive hosting over three million scholarly articles across eight subject areas including physics, mathematics and computer science. Reading requires no registration; content is not peer reviewed.13 views00087Terms of Service; Didn't Read (ToS;DR)A nonprofit community project, online since 2012, that breaks major sites' terms of service and privacy policies into plain-language "points" and grades each service A–E, published as open data with a browser extension and public API.13 views00088PrintablesA free 3D printing model library and maker community run by Czech printer manufacturer Prusa Research: over a million models downloadable without an account, per-model license labels, and Prusameters points redeemable for real filament.13 views00089BoardGameGeekBoard game database and community launched in January 2000, built almost entirely by its users: 150,000+ games with ratings, reviews, and images for ~4 million registered users, plus the BGG Rank, the hobby's most cited leaderboard.13 views00090DesmosA free online graphing calculator and math tool suite from Desmos Studio, covering function plotting, geometry, scientific and matrix calculation, 3D graphs and a Notebook, with sliders, sharing and built-in accessibility.12 views00091iconfontA Chinese vector icon platform run by Alibaba's Alimama experience team, offering icon search, multi-format downloads, icon-font generation and team project workflows, plus illustrations, Lottie animations and official fonts.12 views00092OverleafA collaborative online LaTeX editor that runs entirely in the browser, created as WriteLaTeX in 2011 and merged with ShareLaTeX in 2017; the company reports over 20 million users.12 views00093BandcampOnline record store and music community where artists and labels sell digital music, vinyl, CDs, cassettes, and merch directly to fans. Launched in 2008, it takes 15% on digital and 10% on physical sales; on average 82% reaches artists.12 views00094ForvoA crowdsourced pronunciation dictionary with native-speaker recordings for nearly 6 million words in 430+ languages, filterable by accent with community voting. Listening is free; contributing requires an account; non-commercial use only.12 views00095GeoGuessrGeoGuessr drops players into a random Google Street View panorama and has them locate it on a world map using clues like road signs and license plates. Free accounts get only the Daily Challenge; other modes need a subscription.11 views00096GammaAn AI-powered content design platform that turns a prompt, outline, or imported file into presentations, documents, webpages, and social assets, with export to PPT/PDF and one-click web publishing.11 views00097MDN Web DocsFree, open-source web platform documentation maintained by Mozilla: HTML, CSS, JavaScript, Web APIs, and HTTP, with per-page browser compatibility tables. Online since 2005, edited on GitHub with Open Web Docs and volunteers.11 views00098NumbeoA crowdsourced cost-of-living and quality-of-life database launched in 2009, covering prices, rents and purchasing-power indices for 12,000+ cities. Free to browse with a comparison tool and paid API; data is not official statistics.11 views00099GoodreadsAmazon's social cataloging site for books, launched in 2007 and reporting more than 150 million members by 2023, known for bookshelves, ratings, reviews, and the annual Reading Challenge.11 views000100VirusTotalFree online scanner checking files, URLs, domains, and IPs against 70+ antivirus engines and blocklists at once; launched in 2004, part of Google since 2012. Uploads are shared with the security community — don't submit confidential files.11 views000