head to head · open source
ECC vs Jitsu
ECC has 263,046 GitHub stars, 39,368 forks, 204 open issues and last shipped today. Jitsu has 5,084 stars, 399 forks, 43 open issues and last shipped 2 days ago. ECC leads on adoption by 5,074% (263,046 vs 5,084 stars). ECC is written in JavaScript under MIT; Jitsu is written in TypeScript under MIT. ECC has attracted 15% as many forks as stars, Jitsu 8%. ECC 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 | Jitsu | |
|---|---|---|
| GitHub stars | ★ 263K | ★ 5.1K |
| License | MIT | MIT |
| Written in | JavaScript | TypeScript |
| Last push | 2026-09-20 | 2026-09-18 |
| Forks | ⑂ 39K | ⑂ 399 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ECC if
- You weight community size — 263K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick Jitsu if
- You want the Jitsu feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and Jitsu 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 Jitsu
Jitsu is an MIT licensed, self hostable open source event data platform that collects events from websites, apps and servers and delivers them to data warehouses and other tools, built as a fully scriptable alternative to Segment for data teams and developers who want the pipeline inside their own infrastructure.
read the full Jitsu overview →
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Frequently asked questions
Is ECC or Jitsu more popular?
ECC has 263,046 GitHub stars and Jitsu has 5,084. ECC has the larger community by that measure.
Are ECC and Jitsu free?
Both are open source. ECC is licensed under MIT and Jitsu under MIT. Neither carries a licence fee.
What is the difference between ECC and Jitsu?
ECC is written in JavaScript and Jitsu 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 Jitsu?
Choose ECC if you want the larger community (263,046 stars) or its MIT licence terms. Choose Jitsu if its feature set, stack or MIT licence fits better. Both are self-hostable.