Make pull request branches linkable

Show inline user information on avatar hover.

Delivers shiny emoji reactions to issues and pull requests right to listings!

Toggle files in GitHub Gist

When clicking the notifications icon, displays notifications in a dropdown pane, without leaving the current page.

Gadget for github.com

Add a table of contents navigation to Github Gist pages

Update Gmail UI to visually separate priority inboxes.

Adds a "Homepage" button to GitHub repository search results to quickly access the repository's homepage URL.

Always keep an eye on the latest activity of your favorite projects

View readme/issues/PR images in full screen, w/o leaving the page

A userscript that adds a table of contents to readme & wiki pages

A userscript that shows whitespace (space, tabs and carriage returns) in code blocks

A userscript that makes some lists & markdown tables sortable

A userscript adds download links so that downloaded filenames include the SHA

A userscript that adds code folding to GitHub files

A userscript that toggles diff/PR and commit comments

A userscript that adds a color swatch next to the code color definition

open search results in new tab.

Classical GitHub at its finest

Add a button that contains a list of gist raw file links

A userscript that highlights the linked-to comment

Automatically dismiss the ad that shows when you're not signed in.

Creates a confirmation popup whenever attempting to create an issue or post comment via Ctrl+Enter in GitHub

See top-rated comments in the issue