Apps with 'Legacy Firefox Addon' feature

Brave Web Browser is a fast, free, secure web browser with a built-in ad blocker*, tracking and security protection, and optimized data and battery experience.

Microsoft OneNote, part of the Microsoft Office Suite, is a digital notebook application that gives people one place to gather notes and information.

SimpleScreenRecorder is a Linux screen recorder that supports X11 and OpenGL. It is easy to use, feature-rich, and has a Qt-based graphical user interface. It can record the entire screen or part of it, or record OpenGL applications directly.

Torrends.to combines popular torrent sites and specialized private trackers in a torrent multi-search. Find torrents on The Pirate Bay, RARBG, 1337x, Limetorrents and other popular sites. Easily add your favorite torrent sites to the search.

Burp Suite is an integrated platform for performing security testing of web applications.

ScrapBook is a Firefox extension, which helps you to save Web pages and manage the collection. Key features are lightness, speed, accuracy and multi-language support. Major features are:

ScrapBook X is a Firefox addon based on ScrapBook Plus and also integrating several features from the latest versions of ScrapBook.

Fix the web. Gets rid of a site's cookies and LocalStorage as soon as you close its tabs. Protects against trackers and zombie-cookies. Trustworthy services can be whitelisted.

Click&Clean is a free, fast and easy-to-use extension for Google Chrome and Mozilla Firefox that can be used as a powerful private data Cleaner.

Download Facebook (Album & Video), Instagram, Pinterest, Twitter, Ask.fm, Weibo Album.

Classic Add-ons Archive catalog contains 93,598 versions of 19,450 Firefox add-ons created by 14,274 developers over the past 15 years using XUL/XPCOM technology before Mozilla decided to ruin the classic extensions ecosystem and go exclusively to WebExtensions.

ReminderFox displays and manages lists of reminders and ToDo's. ReminderFox makes sure you remember all of your important dates via easy-to-use lists, alerts, and alarms, right in your browser without the need for a separate calendar program.

FireSSH is a free, cross-platform SSH terminal client for Mozilla Firefox. Written entirely in Javascript!

Remotely monitor your children's mobiles.

Download Status Bar manages every aspect of your downloads (Launch, Show, Scan, Send To, Rename, Checksum, Pause, Resume, Cancel, Clean, Delete), generates Statistics from your Download actions, keeps the History of your previous session downloads and much more.