Developer Tools
Tools and platforms for developers: compatibility references, model hubs, utilities, and data apps.
187 curated websites
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Developer Tools
19 websites
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.
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.
ObservableObservable is a browser-based platform for data visualization and reactive notebooks, co-founded by D3.js creator Mike Bostock. Build and share interactive data documents with JavaScript, Markdown, and SQL.
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.
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.
Stack OverflowThe Q&A site for programmers, created in 2008 by Jeff Atwood and Joel Spolsky and acquired by Prosus in 2021; voting, reputation, and accepted answers have archived 24M+ programming questions under CC BY-SA.
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.
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.
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.
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.
LovableSwedish AI app builder ("vibe coding"): describe an app in natural language and it generates a full-stack web app with frontend, database, auth, and hosting — real code you can sync to GitHub. Launched November 2024 by Lovable Labs.
n8nA workflow automation and AI agent orchestration platform from Berlin's n8n GmbH: wire apps, databases, and LLMs on a visual node canvas, drop into JS/Python anywhere, self-host or use the cloud. Fair-code licensed (not open source).
v0Vercel's AI development platform: describe an app in natural language or upload a design, and it generates a full-stack Next.js/React web app you can edit, sync to GitHub, and deploy to Vercel. Free plan; Plus $30/user/month.
WarpWarp is an open-source, Rust-based agentic development environment: a GPU-accelerated terminal with built-in AI coding agents and a code editor for macOS, Windows, and Linux. The terminal is free, no account needed; agents use credits.
CursorAnysphere's AI-native code editor: a VS Code fork with codebase-wide coding agents, Tab autocomplete, its own Composer model, a CLI and cloud agents. A SpaceX subsidiary since Aug 2026; free tier, paid from $20/mo.
SupabaseSupabase is an open-source Postgres backend platform (BaaS): a full database with auto REST/GraphQL APIs, plus auth, storage, realtime, edge functions, and vector search. Free tier; Pro from $25/org/month; Apache-2.0, self-hostable.
ZedZed is a fast, open-source code editor in Rust from Zed Industries, founded in 2021 by the creators of Atom and Tree-sitter. Built for speed, real-time multiplayer collaboration, and model-agnostic AI. Free editor; hosted AI from $10/month.
BoltBolt (bolt.new) is StackBlitz's in-browser AI full-stack app builder: an AI agent generates, runs, debugs, and deploys web apps from plain-language prompts on a real in-browser Node.js runtime. Free 1M tokens/month; Pro $25/month.
PlausibleOpen-source, privacy-first web analytics from Estonia's Plausible Insights — no cookies, no personal data, a lightweight script, pageview-based pricing, and a free self-hosted edition.