Extension Manager

Edit the alias list
Adds autocomplete to search & tagging.
Turns BBCode into HTML
Allows the user to add a browser 'plugin' to search the site with real-time suggestions
Provides query and selection-based bulk action support
Bulk add server-side images
For stopping spam and other comment abuse
Allow Danbooru apps like Danbooru Uploader for Firefox to communicate with Shimmie
Add HTML to some space (News, Ads, etc)
Add a graphql API
Allow users to upload archives (zip, etc)
Handle CBZ Comic Archives.
Handle windows icons
Handle MP3 files
Handle JPEG, PNG, GIF, WEBP, etc files
Handle static SVG files.
Ban IP addresses
Show various forms of link to each image, for copy & paste
Redirect users to the rules if they use bad tags
Allow users to make comments on images
Ban images based on their hash
Show a list of uploaded posts
Allow users to score images
Allow users to send messages to eachother
Shows a QR Code for downloading a post to cell phones
Self explanatory
Self explanatory
Regenerate a thumbnail image
Report posts as dupes/illegal/etc
This extension allows admins to resize images.
A simple wiki, for those who don't want the hugeness of mediawiki
Show various bits of system information
Allow images to have tags assigned to them
Keep a record of tag changes, and allows you to revert changes.
Shimmie updater! (Requires admin panel extension & transload engine (cURL/fopen/Wget))
Sitemap with caching & advanced priorities