Star200+

Skill comparison

Compare agent skills before installing.

Put high-signal skills side by side and inspect quality, adoption, freshness, install readiness, use-case fit, and warnings in one place.

Comparing 4 skills

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Decision summary

Helium is the strongest overall pick here because it has a 100/100 readiness score and fits Legal and compliance.

Strongest overall

Helium

Use this as a leading candidate, then validate the README and install path in your own agent stack.

Fastest prototype

Helium

Best first install candidate based on install readiness and adoption.

Freshest repo

Mercury

Most recent maintenance signal among this shortlist.

SignalMercury

Firefox fork with compiler optimizations and patches from Librewolf, Waterfox, and GNU IceCat.

Betterfox

Firefox user.js for optimal privacy and security. Your favorite browser, but better.

Helium

Private, fast, and honest web browser

AdguardBrowserExtension

AdGuard browser extension

Quality
100/100
Excellent
100/100
Excellent
100/100
Excellent
100/100
Excellent
Decision verdict
100/100
Production-ready

Use this as a leading candidate, then validate the README and install path in your own agent stack.

100/100
Production-ready

Use this as a leading candidate, then validate the README and install path in your own agent stack.

100/100
Production-ready

Use this as a leading candidate, then validate the README and install path in your own agent stack.

100/100
Production-ready

Use this as a leading candidate, then validate the README and install path in your own agent stack.

Adoption1.5K stars
Verified outcomes are shown on each skill page
11K stars
Verified outcomes are shown on each skill page
18K stars
Verified outcomes are shown on each skill page
4.3K stars
Verified outcomes are shown on each skill page
FreshnessAug 9, 2026Jun 19, 2026Jun 20, 2026Aug 7, 2026
Use-case fit
Legal and complianceCoding agentsRAG and knowledge
Browser automationSports analyticsLegal and compliance
Legal and complianceCoding agentsRAG and knowledge
Sports analyticsLegal and complianceCoding agents
Workflow fit
Content growth agentCoding review agent
Browser QA agentContent growth agent
Content growth agentWeb data pipeline
Content growth agentCoding review agent
Platform hintsJavaScript, Privacy, Claude Code, Browser agentsJavaScript, Privacy, Claude Code, Browser agentsC++, Privacy, Claude Code, Browser agentsTypeScript, Privacy, Claude Code, Browser agents
WarningsNo OpenAgentSkill engagement data yetNo OpenAgentSkill engagement data yetNo OpenAgentSkill engagement data yetNo OpenAgentSkill engagement data yet
Best forLegal and compliance workflows · Claude Code teams · teams that value GitHub adoption signalsBrowser automation workflows · Claude Code teams · teams that value GitHub adoption signalsLegal and compliance workflows · Claude Code teams · teams that value GitHub adoption signalsSports analytics workflows · Claude Code teams · teams that value GitHub adoption signals
Not ideal forteams that need a vendor-supported SLA · high-compliance environments without internal security reviewteams that need a vendor-supported SLA · high-compliance environments without internal security reviewteams that need a vendor-supported SLA · high-compliance environments without internal security reviewteams that need a vendor-supported SLA · high-compliance environments without internal security review
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Install
$ npx skills add Alex313031/Mercury
$ npx skills add yokoffing/Betterfox
$ npx skills add imputnet/helium
$ npx skills add AdguardTeam/AdguardBrowserExtension