Agentic AI Systems is a centralized resource on GitHub listing and describing a wide array of open-source agentic AI frameworks and tools. It organizes entries by capabilities, languages, and supported tools, offering direct links to source code, documentation, and quickstart examples. Developers can quickly identify and compare agent platforms, explore sample implementations, and integrate chosen frameworks into their own projects. The repository is regularly updated to include new projects, version changes, and community contributions, making it a go-to index for autonomous AI systems research and prototyping.