SPREE Addon is a Chrome extension developed by SPREEGuy. It falls under the category of Browsers, specifically Add-ons & Tools. This free extension allows users to modify their favorite websites. However, it is important to note that this extension is currently invite-only.

As of version 0.01, SPREE Addon offers the feature of adding a TGH (TheGamerHouse) verify tag to Twitter and YouTube. This can be useful for users who want to showcase their affiliation with TGH on these platforms. The extension promises to introduce more features in the future, although specifics are not provided.

Overall, SPREE Addon provides a way for users to customize their favorite sites, but its functionalities are currently limited. It will be interesting to see how the extension evolves with future updates.