| Addon | Description |
| au-revoir-utm | Removes crappy utm_ tracking stuff. |
| close-repeated-tabs | This add-on simply adds an option to the Firefox’s Tools Menu called “Close Repeated Tabs” which just does that: close the repeated tabs. |
| downthemall | The first and only download manager/accelerator built inside Firefox. |
| copy-links | Copy multiple URLs in anchors to clipboard. |
| greasemonkey | Customize the way a web page displays or behaves, by using small bits of JavaScript. |
| greasefire2 | This addon is an addition to Greasemonkey that informs you, when there is a userscript available for this page. |
| image-search-options | Image Search Options provides a set of highly customizable reverse image search context menu options. |
| lastpass-password-manager | LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device. |
| s3menu-wizard | Helps removing, moving and renaming menus and menu items. |
| noscript | Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks. |
| tab-groups-panorama | Tab Groups are an easy way to organize a lot of tabs. |
| tabgroups-menu | Access firefox tabgroups using a dropdown menu. |
| tab-mix-plus | It includes such features as duplicating tabs, controlling tab focus, tab clicking options, undo closed tabs and windows, plus much more. |
| ublock-origin | Un bloqueur de nuisances efficace, qui ménagera votre processeur et votre mémoire vive. |
| disable-anti-adblock | Disables anti-adblocker scripts. |
| repagination | See more search results etc. on one page, concatenating several pages together. |
| long-url-please | Replaces short urls with the originals so you can see where links actually link to. |
| print-edit | Allows editing of web page content while in Print Preview mode. |
| resurrect-pages | Searches through five big page cache/mirrors. |
| download-youtube | An extension that adds direct links to download YouTube videos as MP4 and FLV. |
| evernote-web-clipper | Use the Evernote Web Clipper to save things you see on the web into your Evernote account. |
| decentraleyes | Protège du pistage lié à l'accès à des contenus “gratuits”, centralisés. Accélère de nombreuses requêtes (“Google Hosted Libraries” et autres) en les servant localement, allégeant la charge des sites. Complète les bloqueurs de contenus habituels. |
| sessionmanager | Session Manager saves and restores the state of all windows. |
| textarea-cache | Save automatically the content in Textarea. |
| random-agent-spoofer | Rotates complete browser profiles ( from real browsers / devices ) at a user defined time interval. |
| vtzilla | Right-click on any link and scan the target with VirusTotal. |
| crxviewer | View source code of Firefox addons and Chrome extensions (crx/nex/xpi) from addons.mozilla.org, the Chrome Webstore and elsewhere. |
| Wallabagger | Client Wallabag. |
| Privly | Privly enables you to read private content through any website. |
| Bit Torrent WebUI+ | Upload torrent and magnet links to your BitTorrent client's Web Interface. |
| Disconnect | Make the web faster, more private, and more secure. |