Browser Harness vs BrowserOS
An independent, evidence-based trust comparison of Browser Harness and BrowserOS, two Browser & Computer Use projects in the HVTracker registry. Scores come from public, checkable signals — supply-chain provenance, OSSF Scorecard, maintenance, and adoption — not popularity.
Browser Harness leads on trust — 90.8/100 (Grade A) vs 65.7/100 (Grade B), a 25.1-point gap. Full breakdown below.
| Signal | Browser Harnessbrowser-use/browser-harness | BrowserOSbrowseros-ai/BrowserOS |
|---|---|---|
| HVTrust score | 90.8 | 65.7 |
| Evidence grade | A | B |
| Coverage grade | B | C |
| Overall rank | #9 | #435 |
| Rank in Browser & Computer Use | #1 | #14 |
| GitHub stars | 17.5k | 13.7k |
| Last updated | 1d ago | 2d ago |
| Build provenance | Yes | No |
| OSSF Scorecard | 6.2 / 10 | 4.8 / 10 |
| License | MIT | AGPL-3.0 |
| Downloads | 1.2M/wk | — |
| Trust dimensions (points earned) | ||
| Safety / integrity / 25 | 17.3 | 10.8 |
| Identity & provenance / 18 | 18.0 | 10.8 |
| Transparency / 17 | 13.8 | 12.6 |
| Maintenance / 20 | 19.9 | 19.9 |
| Adoption / 20 | 18.3 | 9.9 |
| Runtime capability surface (full matrix) | ||
| MCP server | Implemented | Implemented |
| External providers | 1 — Anthropic | 1 — Amazon Bedrock |
| Requires API keys | No | No |
| Plugin surface | plugins | plugins |
| Provenance drift | Match | — |
Open in the live compare tool →
Browser Harness profile
BrowserOS profile
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How to read this: HVTrust (0–100) weighs supply-chain signals (provenance, OSSF Scorecard, signed commits, open license) alongside real-world adoption, scaled by an evidence-confidence factor. Grade bands: A ≥ 80, B ≥ 65, C ≥ 50, D < 50. Signals refresh daily. Full methodology v4.3 →