Free and Open Source Software

I hope that my list of apps will help out people, particularly those new to this world of privacy. These apps fit into the categories that people typically look for or should have and they are all at least fairly recently updated.

Notes

• Required repositories for these apps: F-Droid, DivestOS Official, Guardian Project Official Releases, IzzyOnDroid, Fedilab Apps, FUTO, Molly F-Droid Repo, NewPipe upstream (preferred)
• Simple Mobile Tools has been sold to ZipoApps and thus not worth downloading anymore. FossifyOrg is the "official" fork now and will be releasing their versions soon

deGoogled Android Operating Systems

• GrapheneOS (highly secure OS with sandboxed GooglePlay as an option)
• CalyxOS (uses MicroG)
• DivestOS (hardened fork of Lineage with ability to re-lock bootloader)
• LineageOS (many phones supported)
• /e/OS

Basics

Keyboards:

• OpenBoard
• FlorisBoard (will be great after stable release of V4.0)
• Fossify Keyboard
• FUTO Voice Input

Contacts:

• Fossify Contacts
• ~~Simple Contacts Pro SE (likely abandoned after the sale of SMT. Author plans to add functionality to Fossify Contacts)~~

Dialers:

• Fossify Dialer
• Koler

Messaging:

• QKSMS
• Fossify SMS
• Signal (cross platform iMessage alternative)
• Molly (hardened Signal)
• Telegram FOSS
• Element (Matrix client)

File Managers:

• Fossify File Manager
• Material Files
• Amaze
• MuPDF mini
• Sav PDF Viewer

Notes:

• QuillPad
• Notally
• Orgzly Revived
• Standard Notes
• Notesnook
• Joplin

Email:

• K-9 Mail
• FairEmail
• Proton Mail

Gallery:

• Fossify Gallery
• Aves Libre

Calendar:

• Fossify Calendar
• Etar - OpenSource Calendar

App Stores

• Droid-ify (alternative client to fdroid with updated UI and features)
• Obtanium (install & manage apps directly from source)
• Aurora Store

Utilities

• OpenCalc
• Unit Converter Ultimate
• Audio Recorder
• Open Camera
• OpenScan
• WiFiAnalyzer

Browsers

• Firefox
• Mull (hardened Firefox)
• Brave (privacy oriented Chromium browser)
• Tor

Mapping

Navigation:

• Magic Earth
• Organic Maps
• OSMAnd+
• GMaps WV

OSM Editors:

• Every Door
• SCEE
• StreetComplete

Other:

• Sky Map
• c:geo (geocaching)

Gaming

• Lemuroid (emulator)
• UniPatcher (ROM patcher)
• Lexica (word game with multiplayer)
• 2048 Open Fun Game
• Libre Memory Game (card based)
• Sudoku (Privacy Friendly)
• Crossword
• Minesweeper - Antimine
• Mindustry (tower defense)
• Chip Defense (tower defense)
• Anuto TD (tower defense)
• Destination Sol (2D space RPG)
• Endless Sky (space trading game)
• Unciv (4x civilization building)
• Xeonjia: Ice Adventures (2D adventure game)
• Shattered Pixel Dungeon (traditional roguelike dungeon crawler RPG)
• Lato (2D snowboard game)

Social Media

Mastodon:

• Mastodon
• Moshidon
• Tusky
• Megalodon
• Shitter
• Pachli
• Fedilab

Lemmy:

• Voyager
• Jerboa

Pixelfed:

• PixelDroid
• Fedilab

Nostr:

• Nozzle
• Amethyst

Fitness

• OpenTracks
• FitoTrack
• Massive
• OpenHIIT

Audio

• Retro Music (music player)
• Phonograph Plus (music player)
• Wavelet (EQ)
• URL Radio
• Radio Upnp
• Harmony Music
• Audile (Shazam alternative)
• AntennaPod (podcast player)
• Voice Audiobook Player

Security

• ImagePipe (remove image metadata)
• Hypatia (ClamAV antivirus)
• AirGuard - AirTag Protection
• Bitwarden (sync-able password manager)
• KeePassDX (non-sync-able password manager)
• Aegis Authenticator (TOTP manager)
• OpenKeychain: Easy PGP
• Hash Checker

Miscellaneous

• Autu Mandu (automobile maintenance log)
• NewPipe (YouTube frontend)
• Grayjay (multiple video content frontend)
• Openreads (reading log)
• Graded - Grade Tracker
• AnkiDroid (flashcard study aid)