> For the complete documentation index, see [llms.txt](https://docs.greytrix.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.greytrix.com/gumu-salesforce-integration/add-ons.md).

# Add-Ons

- [Purchase Order](https://docs.greytrix.com/gumu-salesforce-integration/add-ons/purchase-order.md)
- [Avalara Avatax Compatibility](https://docs.greytrix.com/gumu-salesforce-integration/add-ons/avalara-avatax-compatibility.md)