awesome-agent-skills and SKILLS_All-in-one
Both projects serve as open-source libraries or resources for AI agent skills, making them **competitors** offering similar functionalities for different platforms (A being a general resource, B specifically targeting Claude Code, ChatGPT, and MCP).
About awesome-agent-skills
skillmatic-ai/awesome-agent-skills
The definitive resource for Agent Skills - modular capabilities revolutionizing AI agent architecture
A curated directory with structured learning phases—from fundamentals through benchmarking—that maps Agent Skills across 13+ platform integrations (Claude, OpenAI, Gemini, VS Code, GitHub Copilot, etc.). Features official skill catalogs from Anthropic, OpenAI, and Microsoft alongside community libraries, marketplaces, and development guides using the standardized `SKILL.md` format with progressive disclosure for efficient context management in LLM agents.
About SKILLS_All-in-one
eric861129/SKILLS_All-in-one
Open-source AI agent skills library with downloadable skills for Claude Code, ChatGPT, and MCP workflows.
Provides deep content preview and file structure inspection before download, enabling developers to evaluate skills across 6 functional categories (development tools, data analysis, security, writing, automation, documents). Built with React/Vite frontend and Fuse.js search, it generates build-time skill manifests to support Claude Code, Claude Desktop, ChatGPT, Gemini CLI, and MCP-based workflows with standardized packaging.
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