Facilitates opening multiple tabs from the Bookmarks Menu and various other bookmark/history related dropdown menus. Less need to keep reopening menu, without using the sidebar. Optional auto-closing feature adds extra convenience.
ImgViewerPlus(Image Viewer Plus) adds zoom, rotate, flip and light switch capabilities with smooth animations to Firefox image viewer. It also makes background and light colors customizable.
Type first letters of add-on name to find them in the list or press Ctrl+↑/↓ to switch between add-ons categories.
Additionally remember and restore last selected item in each list.
ContextMenuPlus adds extra items to context menu(right-click menu):
Copy Page Title, Copy Page URL, Copy as HTML Link, Copy as Link, Open Page Hostname, Copy as Plain Text, Copy Link Text, Copy Feed URL, Paste & Submit, Show Google PageRank, ...
This add-on adds JS Fiddle style code prototyping to Firefox DevTools.
A source viewer that enables you to view not only page's HTML source but also style sheets and scripts. It uses Prism syntax highlighter and it can beautify(unminify) the source code.