Skill comparison
Use this as a shortlist, then open the skill detail page before adopting.
Decision summary
Strongest overall
Leantime
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Fastest prototype
Leantime
Best first install candidate based on install readiness and adoption.
Freshest repo
React Calendar
Most recent maintenance signal among this shortlist.
| Signal | Kalendar Full featured, responsive, lightweight calendar in the browser. | React Calendar Ultimate calendar for your React app. | Cal Heatmap Cal-Heatmap is a javascript charting library to create a time-series calendar heatmap | Leantime Leantime is a goals focused project management system for non-project managers. Building with ADHD, Autism, and dyslexia in mind. |
|---|---|---|---|---|
| Quality | 64/100 Promising | 100/100 Excellent | 100/100 Excellent | 100/100 Excellent |
| Decision verdict | 54/100 Needs manual review Do a manual repository review before adding this to an agent workflow. | 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. |
| Adoption | 298 stars Verified outcomes are shown on each skill page | 3.8K stars Verified outcomes are shown on each skill page | 3.1K stars Verified outcomes are shown on each skill page |
| 10K stars Verified outcomes are shown on each skill page |
| Freshness | Jan 21, 2026 | Jul 27, 2026 | Jul 20, 2026 | Jun 14, 2026 |
| Use-case fit |
| Workflow fit |
| Platform hints | Vue, Calendar, Claude Code, Browser agents | TypeScript, Calendar, Claude Code | TypeScript, Calendar, Claude Code | PHP, Calendar, Claude Code |
| Warnings | No OpenAgentSkill engagement data yet | No OpenAgentSkill engagement data yet | No OpenAgentSkill engagement data yet | No OpenAgentSkill engagement data yet |
| Best for | Browser automation workflows · Claude Code teams · builders willing to evaluate younger projects | Workflow automation workflows · Claude Code teams · teams that value GitHub adoption signals | Workflow automation workflows · Claude Code teams · teams that value GitHub adoption signals | Workflow automation workflows · Claude Code teams · teams that value GitHub adoption signals |
| Not ideal for | teams that need a vendor-supported SLA · high-compliance environments without internal security review | teams that need a vendor-supported SLA · high-compliance environments without internal security review | teams that need a vendor-supported SLA · high-compliance environments without internal security review | teams that need a vendor-supported SLA · high-compliance environments without internal security review |
| OpenAgentSkill engagement | 0 views 0 install copies | 0 views 0 install copies | 0 views 0 install copies | 0 views 0 install copies |
| Install | $ npx skills add altinselimi/kalendar | $ npx skills add wojtekmaj/react-calendar | $ npx skills add wa0x6e/cal-heatmap | $ npx skills add Leantime/leantime |