> For the complete documentation index, see [llms.txt](https://overmindjs.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://overmindjs.org/v27/core.md).

# Core

- [Devtools](https://overmindjs.org/v27/core/devtools.md)
- [Configuration](https://overmindjs.org/v27/core/structuring-the-app.md)
- [State](https://overmindjs.org/v27/core/defining-state.md)
- [Actions](https://overmindjs.org/v27/core/writing-application-logic.md)
- [Effects](https://overmindjs.org/v27/core/running-side-effects.md)
- [Operators](https://overmindjs.org/v27/core/going-functional.md)
- [Server Side Rendering](https://overmindjs.org/v27/core/server-side-rendering.md)
- [Typescript](https://overmindjs.org/v27/core/typescript.md)