For the newly initiated digital independence day (short: di.day) during the 39c3 talk "Die Känguru-Rebellion: Digital Independence Day" by Mark-Uwe Kling. This blog post is list of Apps that I use and and find good.

F-Droid

F-Droid is an alternative app-store to the google Play-Store that only contains apps that respects the user. They also have to be fully free and open-source.

F-Droid comes preinstalled on my microG for lineageOs device. However, it can also be installed on regular android devices. The benefit of the preinstalled version is that auto-update of apps installed via the F-Droid store also works.

Most Apps I use are in the regular F-Droid store, some apps are only on the IzzyOnDroid F-Droid Repository and for the Tor Browser the Guardian Project.

Apps from F-Droid:

• Fennec with uBlock Origin.
• Tor Browser for private browsing
• Metrolist: Music App allowing based on YouTube Music allowing to cache/download albums and songs
• NewPipe (Tubular): YouTube frontend without ads. Allows to download videos and audio
• Loop Habit Tracker: To track long-term habits
• Cirrus: Weather App (this one is changing constantly)
• Bitwarden: Password manager. Self-hosted with vaultwarden
• OsmAnd~: Maps for offline routing (I've heard that CoMaps is more user friendly). Based on OpenStreetMap data. I also use it for modifying some opening hours
• Element: I prefer using Signal, because everything is end-to-end encrypted there, but I also use Element
• Thunderbird (formerly known as K-9 Mail)
• Nextcloud: File synchronization to my file server + InstantUpload of images
• DAVx5: Contact and Calendar synchronization with Nextcloud server
• Transportr: Navigatior for public transport. Öffi is also great.
• OSS Document Scanner: Scanning of documents
• StreetComplete: Quest based, gamified editing of OpenStreetMap
• Vespucci: More advanced editing of OpenStreetMap data.
• VLC, MPV: Music/Video player for local files
• Termux, BusyBox, Markor: To SSH to a few servers and have a local copy of git repositories
• Games:
  • Simon Tatham's Puzzles: 40 single-player logic games
  • Shattered Pixel Dungeon: A roguelike game based on Pixel Dungeon
  • Feudal Tactics: Strategy game with countless unique and challenging levels
  • Robozzle: Robot programming game (unfortunately the server is down and games don't load)
  • Rocks 'n' Diamonds: Arcade style game
• Shelter: To isolate some more untrusted apps into the work profile
• Aurora Store: To install some Apps from Play-Store
• Zapp: Collection of German public broadcasting live streams

From Play store:

The first one of this list is open source and I would be happy to also use from F-Droid if it were available. And the two remaining ones don't have good alternatives that I'm aware of.

• Signal: Secure messenger. Preferred app for Instant Messaging.
• DB Navigator: Tickets for traveling with Deutsche Bahn
• Rail Planner: Tickets for traveling long-distance in EU