FOSS apps: free and open source

Free and open-source software: the source code is public under an open licence.

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Flux - Movies, Shows & Anime local player

Modern local video player and library for your movies, shows, and anime.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Flux News

Newsreader for miniflux backend
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
FluxLinux - Mobile Linux

Run full Linux desktop environments on Android with GPU acceleration
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Flybook

Private offline flight logbook for aviation enthusiasts
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Flying Carpet

Cross-platform AirDrop between Android/iOS/Linux/macOS/Windows via ad hoc WiFi
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid Zapstore
Flym DecSync

Sync RSS without a server using DecSync
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
FMD

Locate and control your device remotely
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
FMD edge

Locate and control your device remotely
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
FoCal

FoCal enables you to create your personal photo calendar
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Focus Launcher

A text-only, black and white launcher with app timers and a weekly review
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
FocusBuddy

A cute, privacy-first Pomodoro companion for Android.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
FocusMastodon

FocusMastodon is a bright and colourful Mastodon client
- Android only
Google Play Aurora Store F-Droid Zapstore
FocusPodcast

FocusPodcast is a quality podcast management and playback application
- Android only
Google Play Aurora Store F-Droid Zapstore
Foggy Maps

A personal exploration map where fog dissipates where you have walked.
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Fokus Launcher

Minimal launcher with clock, weather, fast app search, and gesture navigation.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
Fold Switcher

Switch between various folding states on foldable devices
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
folder launcher

A file structure inspired launcher
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Folderlogs

Scan and log changes in folders
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Foldio

A music player that treats folders as playlists.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Folio

A reader for your self-hosted FreshRSS server
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Font Gallery

An App to display how different fonts families and their variations look.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid GitHub Zapstore
FontStylr

stylize your text with cool fonts - emo, goth, bolt, gl1tch3d
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Food Scale Droid

Scale prices to common base units
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Food You - Calorie Tracker & Food Diary

Track your calories with Material You aesthetic
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Food-Tracker (PFA)

Allows tracking of your daily calorie consumption
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
F
Forage

A shopping list front-end to your self-hosted Mealie instance.
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Force Stop Helper

Helps you manually force-stop background apps.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Forecastie

A simple, copylefted libre software weather app for Android.
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
ForgetMeNot

A flashcard app that won't let you forget anything.
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
ForgetMeNot

A simple todo app with reminders and obsidian integration
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Forkgram

Forkgram is a fork of the official Telegram for Android application.
- Internet
- FOSS
- Free
- No tracking
- Android only
F-Droid GitHub Zapstore
Forkgram Classic

A Telegram fork preserving the classic UI from before the Liquid Glass era.
- Internet
- FOSS
- Free
- No tracking
- Android only
F-Droid Zapstore
Forkyz

Crossword puzzles application, download and play.
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Forkyz Scanner

Crossword-scanning companion app to Forkyz crossword app.
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Form-N-Fun

Draw a custom maze on paper and play it on your device using the accelerometer
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Formulus

Offline-first bespoke data collection apps from Open Data Ensemble
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
ForPDA

Client for 4pda.ru
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Forro Lyrics

Offline database of Forró lyrics
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Fortune Telling

Offline Western astrology, I Ching divination, and Chinese daily almanac
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
FOSDEM 2026 Schedule

Conference program app for the FOSDEM conference
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
FOSDEM Companion

Schedule browser for the FOSDEM conference
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
FOSS Browser

A fully free (as in freedom) open source browser for Android.
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
FOSS Warn

Receive emergency alerts worldwide
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
FOSS4G 2024 Schedule

Conference program app for the FOSS4G 2024 conference in Belém, Brazil
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
FOSS4G Europe 2025

Program app for the FOSS4G conference
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
FOSSGIS 2026 Schedule

Conference program app for the FOSSGIS conference
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Fossify Calculator Beta

Simple and open-source calculator for quick and easy calculations
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid GitHub Zapstore
Fossify Camera Beta

Lightweight open-source camera app for quick, easy, and secure photography
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid GitHub Zapstore