For me it is the note taking/PKMS tool SilverBullet.
2 points
This is fantastic! Just started switching over to Librewolf and Mull. I discovered xBrowserSync in the process, which is a great way to sync browser bookmarks. https://www.xbrowsersync.org/
3 points
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If you only use Firefox-based browsers, you don’t actually need the extension. You can simply enable Firefox Sync in the LibreWolf settings and it’s end-to-end encrypted by default.
