List of the great apps on opensource (FOSS) app market F-droid (https://f-droid.org/). Pull Requests really welcome.
- AdAway Block advertisements
- APG OpenPGP port for android for email/files
- OpenKeychain Another OpenPGP port for android for email/files
- NewPipe Lightweight YouTube frontend that allows downloading
- Tinfoil for facebook Facebook browser with Privacy
- Messenger bypasser Redirects "OpenFB Messenger" intents to the web chat
- DNS66 Block ads via DNS without root.
- OpenBoard Keyboard that is based on AOSP and doesn't requrire google binaries.
- OsmAnd Map navigation/browser that is using OSM (openstreetmaps)
- Gadgetbridge Allows to use privately smartwatch and other bluetooth devices without proprietary software
- KeePassDX Password manager compatible with KeePass
- OpenVPN Open vpn service that doesn't require root.
- AFWall+ Firewall (iptables frontend)
- Aegis Authenticator 2FA (two factor authentication) app that is compatible with a lot services for example (Microsoft Authenticator, steam, google authenticator)
- VLC Video and music player that supports any video/audio format.
- ownCloud Allows syncthing files, contacts, music, pictures etc from ownCloud.
- Open Camera Feature rich camera app
- PhotoPrism Photoprism gallery for photoprism.
- AntennaPod Podcasts
- Slide Reddit
- spaRSS Feed Reader
- Material Player Simple audiobook player
- aDosBox Play DOS games on android
- Gloomy Dungeons 2 Oldschool style 3d FPS
- PPSSPP PSP emulator
- Nesoid NES emulator
- Dolphin gamecube, wii, triforce emulator
- Mumla Mumble client
- GameBoid GBA gameboy emulator
- Limbo x86 PC Emulator Qemu pc emulator that allow you to use x86 Linux/Windows/DOS on android.
- Syncthing Syncthing allows easy synchronization with PC/MAC/LINUX syncthing apps.
- BmiCalulator
- Termux Terminal emulator with packages (node, python, ssh)
- K-9 Mail Great email with pop3, imap and encryption
- AnkiDroid Learning English and Japanese through flashcards (compatible with Anki data)
- Red Moon Screen filter for night phone usage
- Syncthing File Synchronization
- Tasks To-do list
- Telegram Telegram messages
- MuPDF PDF viewer with encryption
- AnySoftKeyboard Alternative Keyboard
- FBReader E-book reader
- VIMTouch Vim text style editor
- TextEdit TextEditor
- Amaze Light File manager
- ListMyApps List of Apps
- Pedometer
- openHab allows to use smarthome features for openhab