Registry › Compare › Browser Harness vs Cua

Browser Harness vs Cua

Browser Harness leads on trust: 91.0/100 (Grade A) against 77.5/100 (Grade B), a 13.5-point gap. Browser Harness leads on supply-chain integrity and provenance.

A Browser Harness 91.0

Let Claude Code, Codex or Cursor use your real Chrome, logged in as you. One prompt to set up. Open source, MIT.

browser-use/browser-harness · #17 overall · #2 Browser & Computer Use · coverage B (3/5)

Choose Browser Harness if supply-chain integrity and provenance matter most.

+7.2Identity / Provenance: package provenance attested, against none
+4.4Safety / Integrity: package provenance attested, against none
+3.3Adoption: 3.3M weekly downloads against 3.8k

B Cua 77.5

Scale computer-use 2.0 with open-source drivers, cross-OS sandboxes, and benchmarks for training, evaluation, and data generation.

trycua/cua · #220 overall · #9 Browser & Computer Use · coverage B (3/5)

Cua doesn't lead on any scored dimension in this pair.

Where they differ

17.0

Safety / IntegrityBrowser Harness +4.4

12.6

18.0

Identity / ProvenanceBrowser Harness +7.2

10.8

18.9

AdoptionBrowser Harness +3.3

15.6

+3.5

Runtime calibrationCua +1.4

+4.9

2 dimensions identical: Transparency 13.7 · Maintenance 19.9 · Full evidence table

An independent, evidence-based trust comparison of Browser Harness and Cua, 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.

Full evidence

Signal	Browser Harnessbrowser-use/browser-harness	Cuatrycua/cua
HVTrust score	91.0	77.5
Evidence grade	A	B
Coverage grade	B	B
Overall rank	#17	#220
Rank in Browser & Computer Use	#2	#9
GitHub stars	18.8k	31.6k
Last updated	1d ago	1d ago
Build provenance	Yes	No
OSSF Scorecard	6.1 / 10	6.1 / 10
License	MIT	MIT
Downloads	3.3M/wk	4k/wk
Trust dimensions (points earned)
Safety / integrity / 25	17.0	12.6
Identity & provenance / 18	18.0	10.8
Transparency / 17	13.7	13.7
Maintenance / 20	19.9	19.9
Adoption / 20	18.9	15.6
Runtime capability surface (full matrix)
MCP server	Implemented	Implemented
External providers	1 — Anthropic	2 — Anthropic, OpenAI
Requires API keys	No	No
Plugin surface	plugins	plugins
Provenance drift	Match	Match

Open in the live compare tool → Browser Harness profile Cua 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 v4.4 →