A userscript that adds filters that toggle the view of repo files by extension

A userscript that adds more diff code expanding buttons

A userscript that adds global diff file toggles

A userscript that allows you to customize GitHub's main navigation bar

A userscript that collapses markdown headers

A userscript that replaces relative times with a static time formatted as you like it

bitbucket.org, github.com, gitlab.com: Convenient direct “raw” download links (leftmost file icon) to “Install” user scripts and user styles from file lists. This will also allow user css/js auto‐update, even if the script author has not set @downloadURL and @updateURL.

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 changes the document title if there are unread messages

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

display big banner if project's last commit over 6 months ago and giant banner if over 1 year ago

Add a link to Github Pages (gh-pages) when available.

Classical GitHub at its finest

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

A userscript that hides the "+" and "-" from code diffs

A userscript that allows you to add one or more vertical guidelines to the code

A userscript that adds autocomplete search filters to GitHub