AO3 Disco is a Chrome add-on developed by kevalexzhang. It is a free program that falls under the category of Browsers, specifically Add-ons & Tools.

AO3 Disco is designed to enhance your fanfiction reading experience on Archive Of Our Own (AO3). This add-on provides a Discovery Engine that offers recommendations for fanfiction based on your reading preferences. After finishing a work on AO3, simply scroll to the bottom of the page to find the top three picks for your next read. If you want more recommendations, you can click the "Discover More" button to access additional suggestions, apply search filters, and explore a wider range of fanfiction options.

With AO3 Disco, you can easily discover new and exciting fanfiction that aligns with your interests, allowing you to dive deeper into the world of AO3 and find stories you'll love. It is a valuable tool for avid fanfiction readers who want to expand their reading list and explore different genres and themes.