head to head · open source
ECC vs rea
ECC has 275,269 GitHub stars, 41,120 forks, 266 open issues and last shipped 4 days ago. rea has 29,472 stars, 3,500 forks, 70 open issues and last shipped today. ECC leads on adoption by 834% (275,269 vs 29,472 stars). ECC is written in JavaScript under MIT; rea is written in TypeScript under MIT. ECC has attracted 15% as many forks as stars, rea 12%. rea was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 5 topic tags (ai-agents, claude-code, developer-tools, llm), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
← all 20902 open source comparisons
Side by side
| ECC | rea | |
|---|---|---|
| GitHub stars | ★ 275K | ★ 29K |
| License | MIT | MIT |
| Written in | JavaScript | TypeScript |
| Last push | 2026-10-05 | 2026-10-09 |
| Forks | ⑂ 41K | ⑂ 3.5K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ECC if
- You weight community size — 275K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick rea if
- You want the rea feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and rea fits your workflow better
About ECC
ECC is an MIT licensed open source agent harness performance optimization system that gives AI coding agents a coordinated engineering workflow — plan, test, implement, review, verify, remember, improve — for developers working in Claude Code, Codex, OpenCode, Cursor, and other harnesses.
About rea
REA is an open source MCP server and CLI that lets AI coding agents — and your terminal — reverse engineer native binaries, JavaScript and Electron apps, .NET assemblies, and websites, with evidence attached to every conclusion.
More in Developer Tools
Related comparisons
More Frameworks & Platforms projects
Compare either of these against the rest of the Frameworks & Platforms field.
Frequently asked questions
Is ECC or rea more popular?
ECC has 275,269 GitHub stars and rea has 29,472. ECC has the larger community by that measure.
Are ECC and rea free?
Both are open source. ECC is licensed under MIT and rea under MIT. Neither carries a licence fee.
What is the difference between ECC and rea?
ECC is written in JavaScript and rea in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, ECC or rea?
Choose ECC if you want the larger community (275,269 stars) or its MIT licence terms. Choose rea if its feature set, stack or MIT licence fits better. Both are self-hostable.