FOSS apps: free and open source

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

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Edifier RC10D1

Unofficial remote control for Edifier R2730DB speakers
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Edifier RC10E
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Edifier RC18A

Unofficial remote control for Edifier R1855DB speakers
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Editor

Simple generic text editor
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
eduroamCAT

eduroam Configuration Assistant Tool
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
eduVPN

eduVPN connects securely and encrypted to your institution or Internet
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Egg Returns Home

A simple platformer about an egg
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Egyptian Mouse Pounce

Play Egyptian Rat Screw against humans or cats.
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Egyptian Writer

View, write and export ancient Egyptian texts.
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
E
EHHelper

Ehang helper to use Douyin
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Eidetic

A simple Android app that helps you improve your working memory
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
EinkBro

Lightweight, fast, and powerful browser designed for E-Ink devices
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Einstein's Riddle

Einstein's Riddle (also known as the Zebra Puzzle)
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
ekklesia — Direct Democracy

Anonymous civic participation for Greek citizens
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Electrum Bitcoin Wallet

Fast and self-custodial wallet for Bitcoin and the Lightning Network
- Finance
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Element Classic

Previous generation Element
- Internet
- FOSS
- Free
- No ads
- No tracking
- iOS
- Android
App Store Google Play Aurora Store F-Droid GitHub Zapstore
Element X

Sovereign. Seamless. On Matrix
- Internet
- FOSS
- Free
- No ads
- No tracking
- iOS
- Android
App Store Google Play Aurora Store F-Droid GitHub Zapstore
Elements

Chinese zodiac five elements as a pageable calendar
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Elfeed Mobile

Mobile client for Elfeed, an extensible web feed reader for Emacs
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
eLiquid Calculator

This app will help you to calculate recipes for your e-cigarette.
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
ELM327 Emulator

OBD-II ELM327 adapter emulator for testing diagnostic apps
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Elpe Efpe

Manage health and focuspoints of your Splittermond characters
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Emacs

The extensible self-documenting text editor
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
E
Emerald Dialer

Make calls, view call log
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Emotic

Reignite the love for emoticons and more
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Enchanted Fortress

Build, manage and defend your castle
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Enclavd

Personality Social Network
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Encointer Wallet

Interact with the Encointer Blockchain
- Finance
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Encrypt Text

Minimalistic application to encrypt plain text using AES 256.
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
End of Updates Checker

Check until when your phone gets updates.
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Endless Sky

Android port of endless-sky space trading game.
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Endoscope

Live video streaming between android devices over Wi-Fi
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Energize

Track your nutrition easily and fast.
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid Zapstore
EnforceDoze

Enable Doze mode immediately after screen off and turn off motion sensing
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid GitHub Zapstore
EngineDataLogger-Dashboard

Companion app to EngineDataLogger ECU software.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Enhanced Music Controller Lite

Remote controller for Onkyo devices
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
EnigmaDroid

The smartest Enigma2 companion for Android.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
Ensemble

Unofficial mobile client for Music Assistant
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Ente Auth - 2FA Authenticator

Free, Cross Platform, Private, Open Source Two Factor Authenticator App
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Ente Locker

Store & share important documents privately, and pass them on in emergencies.
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Ente Photos - Open source, end-to-end encrypted al

Ente Photos is an open source photos app, that provides end-to-end encrypted bac
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Enthusiast Tea Timer

Tea timer for Gong Fu and western style brewing for true enthusiasts.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Entropy's Defiance

Minimalist launcher and time-horizon task manager.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
EP Mobile

Medical tools
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
EphemeralWorkProfile

Profile owner Android privacy app.
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Episodes

Keep track of which episodes you’ve watched of your favourite TV shows.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Episteme Reader

A document reader for PDF and E-Books
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Epistolaire

SMS and MMS backup
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid