Agent Browser vs Browser4
An independent, evidence-based trust comparison of Agent Browser 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.
Agent Browser leads on trust — 86.6/100 (Grade A) vs 76.8/100 (Grade B), a 9.8-point gap. Full breakdown below.
| Signal | Agent Browservercel-labs/agent-browser | Browser4platonai/Browser4 |
|---|---|---|
| HVTrust score | 86.6 | 76.8 |
| Evidence grade | A | B |
| Coverage grade | B | B |
| Overall rank | #39 | #103 |
| Rank in Browser & Computer Use | #4 | #8 |
| GitHub stars | 41.5k | 1.1k |
| Last updated | 2d ago | 1d ago |
| Build provenance | Yes | Yes |
| OSSF Scorecard | 4.5 / 10 | 4.8 / 10 |
| License | Apache-2.0 | Apache-2.0 |
| Downloads | 923k/wk | 987/wk |
| Trust dimensions (points earned) | ||
| Safety / integrity / 25 | 18.1 | 13.6 |
| Identity & provenance / 18 | 18.0 | 18.0 |
| Transparency / 17 | 12.3 | 12.6 |
| Maintenance / 20 | 17.1 | 19.9 |
| Adoption / 20 | 19.0 | 11.3 |
| Runtime capability surface (full matrix) | ||
| MCP server | Implemented | Declared |
| External providers | 3 — Amazon Bedrock, Browserbase, Redis | 3 — DeepSeek, OpenAI, OpenRouter |
| Requires API keys | Yes | Yes |
| Plugin surface | plugins | extensions |
| Provenance drift | Match | Match |
Open in the live compare tool →
Agent Browser 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 →