Sync your browsers with Nextcloud (WebExtension: Chrome/Firefox/Opera)

Browser extension for Nextcloud Bookmarks

No, it's impossible for the moment to deliver reliable keybinding-extensions. Firefox has no API for it, so all solutions need to work by injecting a script into each website, and grap keys from this context. And that simply sucks and leads to many problems. They are supposed to work on a solutions, but it likely still needs 6+ months.

Besides that, vimium works well enough under perfect conditions, and is quite mature as it is a port from Chrome. Tridactyl is also promising replacement for Vimperator, but still needs time to grow, because they just started some weeks ago.

Save automatically the content in Textarea.

This add-on will save automatically the content in textarea or WYSIWYG editor when user is typing. User can recover the saved texts in the cache panel, even the tab or the window is closed unexpectedly.

If there is any textarea or WYSIWYG editor in the website you are browsing, you would find that there is an icon at the left of reload icon in the navigate bar. That's the trigger you could open Textcarea Cache Lite. if there is no textarea or WYSIWYG editor, it won't appear.

Automatically saves any textarea typed in, and allows the user to view saved textarea content by clicking on a button.

A webextension that saves forms automatically

Protège du pistage lié aux diffuseurs de 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.