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 Social Share Counter is an interesting add-on for Firefox. Click the button on the navigation bar, this plugin shows the share number of SNS services such as Facebook, Twitter and so on.
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.
Direct YouTube downloads MP3 M4A AAC and HD MP4, FLV, 3GP. With just one mouse click! With the click off an mouse button! Super fast downloads right from the YouTube video page you are viewing.