Skill comparison
Use this as a shortlist, then open the skill detail page before adopting.
Decision summary
Strongest overall
Markitdown
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Fastest prototype
Markitdown
Best first install candidate based on install readiness and adoption.
Freshest repo
Quarkdown
Most recent maintenance signal among this shortlist.
| Signal | Zotero Markdb Connect Zotero plugin that links your Markdown database to Zotero. Jump directly from Zotero Items to connected Markdown files. Automatically tags Zotero Items so you can easily see which papers you've made notes for. | Markitdown Python tool for converting files and office documents to Markdown. | Quarkdown 🪐 Markdown with superpowers: from ideas to papers, presentations, websites, books, and knowledge bases. |
|---|---|---|---|
| Quality | 76/100 Strong | 100/100 Excellent | 100/100 Excellent |
| Decision verdict | 87/100 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 | 666 stars Verified outcomes are shown on each skill page | 156K stars Verified outcomes are shown on each skill page | 16K stars Verified outcomes are shown on each skill page |
| Freshness | Apr 28, 2026 | May 26, 2026 | Jun 17, 2026 |
| Use-case fit |
| Workflow fit |
| Platform hints | TypeScript, Markdown, Claude Code | Python, PDF, Claude Code, OpenAI Agents, LangChain | Kotlin, PDF, Claude Code |
| Warnings | No OpenAgentSkill engagement data yet | No OpenAgentSkill engagement data yet | No OpenAgentSkill engagement data yet |
| Best for | Document processing workflows · Claude Code teams · teams that value GitHub adoption signals | Document processing workflows · Claude Code teams · teams that value GitHub adoption signals | Document processing 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 |
| OpenAgentSkill engagement | 0 views 0 install copies | 0 views 0 install copies | 0 views 0 install copies |
| Install | $ npx skills add daeh/zotero-markdb-connect | $ npx skills add microsoft/markitdown | $ npx skills add iamgio/quarkdown |