YouTube Control Center is an open-source project that aims to enhance the overall YouTube experience by providing the end user with more control in what the playback process is concerned.
Expand your email area by blocking and removing ads on the right hand side of the screen when using Gmail, Hotmail, Outlook.com and Yahoo Mail.
Enables desktop notifications like in Chrome (e.g. Gmail, imo.im) and, if the site doesn't support them, it can notify new messages or updates detecting changes of the title (e.g. Hotmail, Yahoo, Facebook, Twitter). Even if the browser is minimized!
Get free text of research papers as you browse, using Unpaywall's index of ten million legal, open-access articles.
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A more elegant solution for collapsing reddit comment trees. Reddit Comment Collapser is free and open source. Contributions welcome - https://github.com/tom-james-watson/reddit-comment-collapser
Features: ✔ Ability to choose between 10 free Persian fonts; ✔ Use Custom Fonts (Upload any font file and use it); ✔ Built-in support for popular social media and most famous sites ✔ It is completely Open Source; ✔ It is Free of Charge;
Displays player controls for video content on Instagram. Because why isn't that already a feature?
Зберігайте те, що знаходите в Інтернеті.
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Firemoji is a free extension that lets you input emojis on the web browser of your computer.
This is New XKit, a fork of XKit, the extension framework for Tumblr. It allows you to customize your Tumblr experience. This is the W edition, which updates much more infrequently than the official edition, to allow for Mozilla to review the code.