[opensourcedex]

best-of ranking · updated nightly

Best Open Source Frameworks & Platforms Tools

Ranked by GitHub stars — actual adoption, not editorial taste. All 10 are free, open source and self-hostable; license and last activity on every entry.

  1. 1
    rea ★ 422K

    Reverse engineer anything with agents, from app behavior down to native binaries.

    MIT TypeScript pushed 2026-11-02 details →
  2. 2
    ECC ★ 296K

    The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor

    MIT JavaScript pushed 2026-11-02 details →
  3. 3
    react ★ 252K

    The library for web and native user interfaces.

    MIT JavaScript pushed 2026-10-31 details →
  4. 4
    Langflow ★ 156K

    Visual builder for AI agents and RAG pipelines

    MIT Python pushed 2026-11-02 details →
  5. 5
    Supabase ★ 114K

    Postgres-powered backend platform for production apps

    Apache-2.0 TypeScript pushed 2026-11-02 details →
  6. 6
    puppeteer ★ 96K

    JavaScript API for Chrome and Firefox

    Apache-2.0 TypeScript pushed 2026-11-02 details →
  7. 7
    archify ★ 93K

    Agent skill for beautiful, verifiable architecture, workflow, sequence, data-flow, and lifecycle diagrams—self-contained HTML with motion and crisp export.

    Apache-2.0 JavaScript pushed 2026-11-02 details →
  8. 8
    i-have-adhd ★ 60K

    A skill to stop your coding agent from burying the answer. ADHD-friendly output.

    MIT Python pushed 2026-10-19 details →
  9. 9
    dsh-our-free-model ★ 57K

    在 dsh 里装上这个插件即可，无需登录、注册或填 API Key，就能使用包括 DeepSeek V4.1 Flash、Kimi K3 在内的前沿模型——完全免费，不限量。 All you do is install this plugin in dsh: no login, no sign-up, no API k

    MIT JavaScript pushed 2026-11-02 details →
  10. 10
    codebase-memory-mcp ★ 48K

    High-performance code intelligence MCP server. Indexes codebases into a persistent knowledge graph — average repo in milliseconds. 158 languages, sub-ms queries

    MIT C pushed 2026-11-03 details →
method stars desc · snapshot from github api refresh nightly related AI Assisted Coding, Build & Deployment, Website Builders, Terminals, IDEs & Code Editors, API Development & Testing

Related best-of lists

best AI Assisted Coding →best Build & Deployment →best Website Builders →best Terminals →best IDEs & Code Editors →best API Development & Testing →

last updated nightly · ranking method: github stars, live-tracked

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Frequently asked questions

What is the best open source Frameworks & Platforms tool in 2026?

rea leads the ranking with 422,352 GitHub stars, ahead of ECC. Rankings use live GitHub star counts, refreshed nightly.

How is this list of Frameworks & Platforms tools ranked?

By GitHub stars — a proxy for adoption and community size. Each entry also shows its licence, primary language and last commit date, so you can judge maintenance activity rather than trusting the ranking alone.

Are the best Frameworks & Platforms tools free?

Every project on this list is open source and free to self-host. Some also offer paid managed hosting, but the software itself carries no licence fee.