The Most Complete Claude Skill Collections on GitHub: 173 Skills Ready to Use
Two of the most popular Claude Skill repositories on GitHub, covering 13 categories and 173 skills across document processing, development, data analysis, marketing SEO, and more.
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How Big Is the Claude Skill Ecosystem?
Most people use Claude by chatting in a text box — not realizing there's a massive Skill ecosystem built by Anthropic and developers worldwide, covering nearly every work scenario from document processing to code development, data analysis to marketing SEO.
Here are two GitHub repositories worth bookmarking.
Resource 1: awesome-claude-skills
URL: github.com/ComposioHQ/awesome-claude-skills
A carefully curated Claude Skill collection with a standout focus: Skills that take real actions, not just generate text.
Highlights
Connect to 500+ Apps
Through the built-in connect-apps plugin, Claude can directly:
- Send emails
- Create GitHub Issues
- Post to Slack channels
- Operate 500+ mainstream apps
Core Scenarios Covered
- Document Processing: Full support for Word, PDF, PPT, Excel
- Development Tools: AWS CDK, Playwright automation, MCP Server building, iOS Simulator
- Data Analysis: D3.js visualization, LangSmith debugging, data transformation
- Security Testing: FFUF fuzzing, vulnerability analysis
- App Automation: Connect external services via Composio
Resource 2: claude-skills-collection
URL: github.com/abubakarsiddik31/claude-skills-collection
The most comprehensive Claude Skill collection available — 173 Skills across 13 categories, including both official Anthropic Skills and community contributions.
13 Categories, 173 Skills
| Category | Count |
|---|---|
| 💻 Development & Code Tools | 50 |
| 📣 Marketing & SEO | 19 |
| 📝 Writing & Research | 17 |
| 🤝 Collaboration & Project Management | 14 |
| ⚙️ Utility & Automation | 14 |
| 🔐 Security & Testing | 13 |
| 📚 Learning & Knowledge | 11 |
| 🎨 Creative & Design | 8 |
| 💼 Career & Job Search | 6 |
| 🎥 Media & Content | 6 |
| 🔬 Scientific & Research Tools | 5 |
| 📊 Data & Analysis | 5 |
| 📄 Document Skills | 5 |
Skills Worth Highlighting
Documents: docx, pdf, pptx, xlsx are official Anthropic Skills — stable, reliable, and perfect for everyday office work.
Development: 50 dev tool Skills covering AWS deployment, Playwright testing, MCP Server building, and iOS Simulator debugging.
Marketing: 19 marketing and SEO Skills including copywriting, SEO audits, A/B testing, and competitive analysis — a productivity boost for content teams.
Research: 5 scientific tools supporting bioinformatics, cheminformatics, phylogenetic analysis, and other specialized academic workflows.
How to Find the Right Skill Quickly
Facing 173 Skills, how do you find what fits your needs?
Method 1: Search by scenario
Need to process Excel? Search xlsx. Want an SEO audit? Search seo-audit. Need automated testing? Search playwright.
Method 2: Test online first, then decide
This is exactly what I love Skill is built for — no installation needed. Paste any Skill's GitHub URL directly, and see results immediately.
If it works for you, install it. If not, try the next one. Zero cost, zero risk.
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Every Skill in both repositories can be tested directly.
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