head to head · open source
ECC vs HeyForm
ECC has 263,046 GitHub stars, 39,368 forks, 204 open issues and last shipped today. HeyForm has 8,982 stars, 709 forks, 10 open issues and last shipped 11 days ago. ECC leads on adoption by 2,829% (263,046 vs 8,982 stars). ECC is written in JavaScript under MIT; HeyForm is written in TypeScript under AGPL-3.0. ECC has attracted 15% as many forks as stars, HeyForm 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 | HeyForm | |
|---|---|---|
| GitHub stars | ★ 263K | ★ 9.0K |
| License | MIT | AGPL-3.0 |
| Written in | JavaScript | TypeScript |
| Last push | 2026-09-20 | 2026-09-09 |
| Forks | ⑂ 39K | ⑂ 709 |
| 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 HeyForm if
- You want the HeyForm 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 HeyForm 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 HeyForm
HeyForm is an open source form builder written in TypeScript and released under the GNU Affero General Public License v3.0. It lives in the JavaScript and TypeScript ecosystem, and its repository is organised as a monorepo of packages: a Node server, a React webapp, a form renderer, an embeddable JavaScript library, and shared utilities and type definitions used by both the server and the webapp. The project describes itself as an open source form builder built for small business success, and it is positioned as an open alternative to Typeform.
read the full HeyForm overview →
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Frequently asked questions
Is ECC or HeyForm more popular?
ECC has 263,046 GitHub stars and HeyForm has 8,982. ECC has the larger community by that measure.
Are ECC and HeyForm free?
Both are open source. ECC is licensed under MIT and HeyForm under AGPL-3.0. Neither carries a licence fee.
What is the difference between ECC and HeyForm?
ECC is written in JavaScript and HeyForm 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 HeyForm?
Choose ECC if you want the larger community (263,046 stars) or its MIT licence terms. Choose HeyForm if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.