Floccus Bookmarks Syncβ β β β β Very flexible, syncs across many different desktop browsers and mobile devices, and for privacy it can run on your own server or encrypted on another cloud service.
KeePass Password Managersβ β β β β KeePassXC, its browser extension, and KeePass2Android are a nice, clean set of apps to manage your passwords on your OWN desktop and mobile devices, auto-fill websites and apps, and sync over your own server or cloud provider.
Mastodon β Simplified Federationβ β β β β A Firefox add-on that automatically opens remote Mastodon users or posts in your home server when you interact with them.