An independent, evidence-weighted trust comparison of two ui & app builders — ranked on verifiable signals, not popularity.
| Signal | Open WebUI | CopilotKit |
|---|---|---|
| HVTrust score | 88.7 | 75.5 |
| Evidence grade | A | B |
| Registry state | Listed | Listed |
| Safety / Integrity (25) | 17.3 | 10.9 |
| Identity / Provenance (18) | 18.0 | 18.0 |
| Transparency (17) | 13.5 | 8.5 |
| Maintenance (20) | 20.0 | 20.0 |
| Adoption (20) | 19.9 | 18.1 |
| GitHub stars | 141.1k | 34.7k |
| Weekly downloads | 448,283 | 267,153 |
| Last push | 2026-06-11 | 2026-06-11 |
| Language | Python | TypeScript |
| OSSF Scorecard | 5.9 | — |
| Review flags | — | — |
| Recent change | 2026-06-02: Activity score up 6pts (94 → 100) | 2026-05-31: HVTrust up 3.8pts (69.1 → 72.9) |