Comparison
ECC vs onyx
A neutral, constraint-first comparison - live GitHub stats and typed relationships, not marketing.
| ECC | onyx | |
|---|---|---|
| Tagline | The agent harness performance optimization system | AI Chat Platform for LLMs |
| Stars | 227k | 31k |
| Forks | 35k | 4.2k |
| Open issues | 73 | 442 |
| Language | JavaScript | Python |
| License | MIT | Other |
| Last pushed | Jul 6, 2026 | Jul 7, 2026 |
| Categories | AI Agents, Developer Tools | Data & Retrieval, Developer Tools |
Choose ECC if…
- More widely adopted - 227k stars vs 31k.
- Leaner open-issue backlog (73).
- Also covers AI Agents.