Comparison
ECC vs ag-ui
A neutral, constraint-first comparison - live GitHub stats and typed relationships, not marketing.
| ECC | ag-ui | |
|---|---|---|
| Tagline | The agent harness performance optimization system | The Agent-User Interaction Protocol |
| Stars | 227k | 15k |
| Forks | 35k | 1.3k |
| Open issues | 73 | 305 |
| Language | JavaScript | TypeScript |
| License | MIT | MIT |
| Last pushed | Jul 6, 2026 | Jul 6, 2026 |
| Categories | AI Agents, Developer Tools | AI Agents |
Choose ECC if…
- More widely adopted - 227k stars vs 15k.
- Leaner open-issue backlog (73).
- Also covers Developer Tools.