Free Memory facilitates the memory operations provided in about:memory page, in the form of an add-on. With this, it’s no longer necessary to open a separate tab and go to about:memory to reduce the memory consumed by Firefox. The add-on provides options in a widget panel, which helps in performing Garbage collection, Cycle collection and Minimize Memory operations.
Shortest URL shortener ever shortens the current page’s URL and copies it to the clipboard with a single click.
Passive Cache uses Google’s text-only cache service and Archive.org Wayback Machine to display historical versions of a specified web link. This add-on allows for the viewing of a page, or site, while avoiding active connections to the target site.
ALLYouTubeDownloader extension (FLV/MP4/WebM; HD/HQ). Windows only. Works only with ALL YouTube Downloader 2.3 application or higher (versions 2.2 and lower doesn’t work anymore).
Want to quickly replace a bookmark? Try out the Replace Bookmark add-on for Firefox. This extension allows you to quickly replace an existing bookmark with a bookmark of the current page.
Have you ever thought of getting alerts on land disasters like earth quake, right on your desktop. eQuake is the solution for that.
Screen capture Web Page, selected region or whole browser window, edit screenshots and save the images to Local File or Google Drive. Edit screenshots in a very user-friendly interface with the different tools.
Get a faster browsing experience by blocking nasty web resources using Bluhell Firewall, the lightweight Ad-Blocker and Tracking/Privacy Protector.
Google Translator is a handy multi-language translator built on top of Google Translate. It gives you Google Translate UI feel right on your Firefox toolbar.
The Manage Folders add-on for Firefox places a “Manage Folder” item on the context menu of bookmark folders, which opens the “Places Organizer” expanded to that folder.