head to head · open source
ECC vs Chartbrew
ECC has 263,046 GitHub stars, 39,368 forks, 204 open issues and last shipped today. Chartbrew has 4,061 stars, 455 forks, 5 open issues and last shipped today. ECC leads on adoption by 6,377% (263,046 vs 4,061 stars). ECC is written in JavaScript under MIT; Chartbrew is written in JavaScript under a custom or non-standard licence. ECC has attracted 15% as many forks as stars, Chartbrew 11%. Chartbrew 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 | Chartbrew | |
|---|---|---|
| GitHub stars | ★ 263K | ★ 4.1K |
| License | MIT | Custom / other |
| Written in | JavaScript | JavaScript |
| Last push | 2026-09-20 | 2026-09-20 |
| Forks | ⑂ 39K | ⑂ 455 |
| 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 Chartbrew if
- You want the Chartbrew feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches JavaScript
- You evaluated both and Chartbrew 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 Chartbrew
Chartbrew is an open source web application for building and sharing live data dashboards. It sits in the JavaScript developer tools ecosystem and connects directly to APIs, SQL databases, and NoSQL databases so users can turn query results and request responses into charts. The project provides a chart builder, editable dashboards, embeddable charts, a query and request editor, team capabilities, scheduling, and an AI assistant.
read the full Chartbrew overview →
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Frequently asked questions
Is ECC or Chartbrew more popular?
ECC has 263,046 GitHub stars and Chartbrew has 4,061. ECC has the larger community by that measure.
Are ECC and Chartbrew free?
Both are open source. ECC is licensed under MIT, and Chartbrew has no licence declared in this registry. Both are free to self-host.
What is the difference between ECC and Chartbrew?
ECC is written in JavaScript and Chartbrew in JavaScript. 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 Chartbrew?
Choose ECC if you want the larger community (263,046 stars) or its MIT licence terms. Choose Chartbrew if its feature set, stack or Custom / other licence fits better. Both are self-hostable.