head to head · open source
ECC vs synthadoc
ECC has 270,282 GitHub stars, 40,398 forks, 215 open issues and last shipped yesterday. synthadoc has 1,500 stars, 146 forks, 6 open issues and last shipped yesterday. ECC leads on adoption by 17,919% (270,282 vs 1,500 stars). ECC is written in JavaScript under MIT; synthadoc is written in Python under AGPL-3.0. ECC has attracted 15% as many forks as stars, synthadoc 10%. synthadoc was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| ECC | synthadoc | |
|---|---|---|
| GitHub stars | ★ 270K | ★ 1.5K |
| License | MIT | AGPL-3.0 |
| Written in | JavaScript | Python |
| Last push | 2026-09-30 | 2026-09-30 |
| Forks | ⑂ 40K | ⑂ 146 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ECC if
- You weight community size — 270K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick synthadoc if
- You want the synthadoc feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Python
- You evaluated both and synthadoc 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 synthadoc
Synthadoc is an open source, LLM powered knowledge compilation engine for individuals, small teams, and enterprises who want a structured, local first wiki built from their raw documents rather than a retrieval system that answers queries on the fly.
read the full synthadoc overview →
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Frequently asked questions
Is ECC or synthadoc more popular?
ECC has 270,282 GitHub stars and synthadoc has 1,500. ECC has the larger community by that measure.
Are ECC and synthadoc free?
Both are open source. ECC is licensed under MIT and synthadoc under AGPL-3.0. Neither carries a licence fee.
What is the difference between ECC and synthadoc?
ECC is written in JavaScript and synthadoc in Python. 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 synthadoc?
Choose ECC if you want the larger community (270,282 stars) or its MIT licence terms. Choose synthadoc if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.