XUL Add-ons, as browsers with their support, provide to user more freedom in creation and extension of browsers features. XUL has so many features that many addons are impossible to realize in browsers without XUL support.
Customize menus : Helps removing, moving and renaming menus and menu items Colorize important menu for ease of use! (use Style (CSS)) Change or disable any of used keyboard shortcuts Support: Firefox, Thunderbird and SeaMonkey
In some countries YouTube videos are blocked! Unblock them with this Addon. Supported countries: Germany, Netherlands, Spain, ...? not US compatible Status+Support: proxtube.com & Twitter: twitter.com/ProxTube (EN/DE)
Xmarks is the #1 bookmarking and open tab add-on. Keep your bookmarks, and open tabs backed up and synchronized across computers and browsers. Mobile phones with Premium access. Utilize LastPass to sync passwords!
Cookies manager to view, edit and create new cookies. It also shows extra information about cookies, allows edit multiple cookies at once and backup/restore them. THIS ADDON WILL NEVER SUPPORT FIREFOX 57+ USE WATERFOX OR PALEMOON INSTEAD
AiOS lets you open various windows as sidebar panels, and quickly switch between them. So it put an end to the window chaos! In addition to bookmarks and history it opens dialogues such as downloads, add-ons and more in the sidebar.
BlockSite is an extension, which automagically blocks websites of your choice. Additionally, this extension will disable all hyperlinks to these websites, by just displaying the link text without the clicking functionality.
FVD Speed Dial ★ Most popular ★ New Tab Page replacement. 1) The Fastest access to your Favorite and most Visited websites! 2) Start Page with 3D view 3) Synchronization and local file backup 4) Organize in groups 5) Many customization options
Cliqz integrates an innovative quick search engine into Firefox. Spare yourself the detour via search engine pages. With privacy enhancements such as anti-tracking, Cliqz gives you control over your data.