FOSS apps: free and open source

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

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Book Listing App

A simple app which lists all books from Google Books API
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Book's Story

Dive into the world of adventure as you discover your favorite book's story!
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
Bookaccio Book Tracker

Your Personal Book Tracker
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
BookStash

A private, offline-first reader and library for web fiction and books.
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
BookWyrm

A BookWyrm client for Android.
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
Booming Music

Clean, fast, and Material-driven music player with powerful features
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
BootBoi

Turn on/off your remote machine without leaving your couch!
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
B
boQwI'
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid
B
Bote

Split shared group expenses and settle up with minimal transfers
- Finance
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Bouncing Logo

Classic TV and DVD player screensaver app with bouncing DVD logo.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Bouncy

A tiny bouncing ball that plays musical notes when it hits the walls.
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
BoutScoring

App for Scoring Combat Sports Bouts
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Box Smasher

Shoot balls to smash boxes into the void!
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Box Stacker

Box Stacker is a physics-based construction puzzle game.
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Box, Box!

Unofficial app for Formula 1 and Formula E fans!
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Boxcars

Play backgammon online via bgammon.org
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
BoxingClock

Interval timer for boxing training with audio cues and configurable rounds.
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
boxorg

Declutter meditatively — photograph, frame, pack, find it again.
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Brailliac: Braille Keyboard

System keyboard based on a Braille cell!
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Braincup - Brain Training

Train your focus, memory and math skills.
- Games
- FOSS
- Free
- Paid
- No ads
- No tracking
- Android only
Google Play F-Droid GitHub Zapstore
Brainf

Interpreter for the ‘Brainf’ programming language
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
brainjogging

An application to train your brain.
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Brainstonz for Android

Brainstonz is a board game for two players
- Games
- FOSS
- Free
- No tracking
- Android only
F-Droid
Brazilian Portuguese for AnySoftKeyboard

AnySoftKeyboard Brazilian Portuguese Language pack
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Break.Down.Timer

A timer with intermediate notifications
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Breakout 71

Break colourful bricks, catch bouncing coins and select powerful upgrades !
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Breathly

A simple way to focus on your breathing
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Breezy Weather

A feature-rich weather app with good visualizations and many sources.
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
Brethap

Control your breathing during meditation.
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Briar

Secure messaging, anywhere
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
B
Briar Mailbox

Receive encrypted messages while Briar is offline
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Bribri for AnySoftKeyboard

AnySoftKeyboard Bribri Language pack
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Brick Blast

Turn-based brick breaker: aim, shoot, bounce and clear the bricks.
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
BroadBoard

Large, high-contrast on-screen keyboard designed for low vision users
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Broccoli: The Green Recipe App

Recipe manager, cooking assistant, seasonal calendar: the eco-friendly cookbook.
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Brogue CE Android

Brogue CE Android - a classic dungeon crawling roguelike
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Broker 1961

Very attractive board game which was created in 1961 for trading shares
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
B
BRouter

Get elevation-aware cycling directions
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Brownian Particles Live Wallpaper

Live Wallpaper simulating the brownian motion of particles in laser light
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Brume Wallet

The private Ethereum wallet
- Finance
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Bruno's Meditation Timer

Meditation and pranayama timer with streak tracking and other statistics.
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
BTC Map

Find places to spend sats wherever you are
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Bubble

Spirit level and ruler
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Bubble Notice

A lightweight bubble notice tool, providing more intuitive notifications for the
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Bubble Penetration

Fast arcade action: collect colors, chain combos, beat the highscore.
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Bubble Shooter

A modern 2D bubble shooter puzzle game
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Buckwheat: Budget manager

App that helps you spend money wisely
- Finance
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid GitHub Zapstore
Buddha Quotes

A Free and Open Source Buddha Quotes app with a focus on privacy.
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid