---
title: Extensions
canonical: 'https://lightning.ai/docs/pytorch/stable/reference/extensions'
---
# Extensions {#extensions}



---

**Navigation**

- Parent: [Reference](/docs/pytorch/2.6.6/reference.md)
- Children:
  - [Accelerators](/docs/pytorch/2.6.6/reference/extensions/accelerator.md)
  - [Callback](/docs/pytorch/2.6.6/reference/extensions/callbacks.md)
  - [Save Callback state](/docs/pytorch/2.6.6/reference/extensions/callbacks_state.md)
  - [Save DataModule state](/docs/pytorch/2.6.6/reference/extensions/datamodules_state.md)
  - [Logging](/docs/pytorch/2.6.6/reference/extensions/logging.md)
  - [Plugins](/docs/pytorch/2.6.6/reference/extensions/plugins.md)
  - [Strategy](/docs/pytorch/2.6.6/reference/extensions/strategy.md)