# Categories

The **Categories** section provides access to:

* [NAICS Categories](https://docs.govtribe.com/user-guide/what-is.../categories/naics-categories)
* [PSC Categories](https://docs.govtribe.com/user-guide/what-is.../categories/psc-categories)
* [NIGP Categories](https://app.gitbook.com/o/-MCIrvumLwVbob5uxgIg/s/-MCSLrBicFcHXK4b-nOy-887967055/~/changes/659/what-is.../categories/nigp-categories)
* [UNSPSC Categories](https://app.gitbook.com/o/-MCIrvumLwVbob5uxgIg/s/-MCSLrBicFcHXK4b-nOy-887967055/~/changes/659/what-is.../categories/unspsc-categories)