Operating System

• CalyxOS
  • Alternativ: LineageOs
• F-Droid

Apps

• Audio Spectrum Analyzer
• Binary Eye
• Bubble
• Cirrus
• DAVx⁵
• Etar - OpenSource Calendar
• F-Droid Basic
• Fennec F-Droid
• GPSTest
• Hacker’s Keyboard
• HeliBoard
• Jitsi Meet
• K-9 Mail
• M.A.L.P.
• Mather
• MuPDF viewer
• NewPipe
• NFSee - NFC Card Helper
• Offi
• Open Camera
• OpenFoodFacts
• Organic Maps: Hike, Bike, Drive Offline
• PassAndroid
• PeakOrama
• Retro Music
• SatStat
• Seasonal Foods Calendar
• Share via HTTP
• Sky Map
• SMS Backup+
• Tasks.org: Open-source To-Do Lists & Reminders
• Termux
• Todo Agenda
• Weechat-Android
• whoBIRD
• WiFiAnalyzer
• Zapp
• c:geo

Remote Connections and Synchronization

• OpenSSH
• Dovecot
• Weechat
• Radicale-Remind
• Mosh