Browser Harness vs Browser4
An independent, evidence-based trust comparison of Browser Harness and Browser4, 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 — 88.6/100 (Grade A) vs 76.8/100 (Grade B), a 11.8-point gap. Full breakdown below.
| Signal | Browser Harnessbrowser-use/browser-harness | Browser4platonai/Browser4 |
|---|---|---|
| HVTrust score | 88.6 | 76.8 |
| Evidence grade | A | B |
| Coverage grade | B | B |
| Overall rank | #23 | #103 |
| Rank in Browser & Computer Use | #1 | #8 |
| GitHub stars | 17.2k | 1.1k |
| Last updated | today | 1d ago |
| Build provenance | Yes | Yes |
| OSSF Scorecard | 6.1 / 10 | 4.8 / 10 |
| License | MIT | Apache-2.0 |
| Downloads | 2.3M/wk | 987/wk |
| Trust dimensions (points earned) | ||
| Safety / integrity / 25 | 16.5 | 13.6 |
| Identity & provenance / 18 | 18.0 | 18.0 |
| Transparency / 17 | 13.7 | 12.6 |
| Maintenance / 20 | 19.3 | 19.9 |
| Adoption / 20 | 18.6 | 11.3 |
| Runtime capability surface (full matrix) | ||
| MCP server | — | Declared |
| External providers | 1 — Anthropic | 3 — DeepSeek, OpenAI, OpenRouter |
| Requires API keys | No | Yes |
| Plugin surface | plugins | extensions |
| Provenance drift | Match | Match |
Open in the live compare tool →
Browser Harness profile
Browser4 profile
More Browser & Computer Use →
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 →