Curated community registry for discovering Claude Code and OpenAI Codex plugins and agentic skills, ranked by installation data across codebase intelligence, memory, SEO, and cybersecurity categories.
Plugin Development
Tools that assist in building extensions for a specific platform's proprietary plugin system — such as a chat app, CMS, or AI assistant's plugin marketplace — distinct from MCP tools, which follow an open, cross-platform protocol instead of one vendor's system.
5 tools
Updated 2026
ChatGPT Plugins extend AI capabilities with web browsing, code execution, and third-party integrations for enhanced productivity.
Copilot Extensions integrate AI into development workflows, supporting multiple languages and tools to enhance coding productivity.
Claude Actions enables AI to execute real-time tasks like web searches and data retrieval, integrating with external tools for dynamic, automated workflows.
Gemini Extensions integrates with Google apps and services to enhance productivity, offering direct access to Gmail, Docs, and more for streamlined workflows.
Frequently Asked Questions
Plugin development targets a specific platform's own proprietary extension system, while MCP tools follow an open protocol designed to work across multiple compatible clients.
Common targets include chat assistants, browsers, content management systems, and productivity apps, each with its own plugin format and submission process.
Many provide templates and testing support aimed at meeting a specific marketplace's submission requirements, though the review process itself is handled by the platform.
