head to head · open source
ECC vs PromptHub
ECC has 270,282 GitHub stars, 40,398 forks, 215 open issues and last shipped yesterday. PromptHub has 1,687 stars, 193 forks, 42 open issues and last shipped 3 days ago. ECC leads on adoption by 15,921% (270,282 vs 1,687 stars). ECC is written in JavaScript under MIT; PromptHub is written in TypeScript under AGPL-3.0. ECC has attracted 15% as many forks as stars, PromptHub 11%. ECC was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (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.
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Side by side
| ECC | PromptHub | |
|---|---|---|
| GitHub stars | ★ 270K | ★ 1.7K |
| License | MIT | AGPL-3.0 |
| Written in | JavaScript | TypeScript |
| Last push | 2026-09-30 | 2026-09-28 |
| Forks | ⑂ 40K | ⑂ 193 |
| 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 PromptHub if
- You want the PromptHub feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches TypeScript
- You evaluated both and PromptHub 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 PromptHub
PromptHub is an open source, local first desktop workbench for managing prompts, SKILL.md files and agent assets, aimed at individual developers and small teams who work across several AI coding tools and want that material to stay on their own machines.
read the full PromptHub overview →
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Frequently asked questions
Is ECC or PromptHub more popular?
ECC has 270,282 GitHub stars and PromptHub has 1,687. ECC has the larger community by that measure.
Are ECC and PromptHub free?
Both are open source. ECC is licensed under MIT and PromptHub under AGPL-3.0. Neither carries a licence fee.
What is the difference between ECC and PromptHub?
ECC is written in JavaScript and PromptHub 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 PromptHub?
Choose ECC if you want the larger community (270,282 stars) or its MIT licence terms. Choose PromptHub if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.