FOSS apps: free and open source

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

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Dog sports diary

A diary to keep track of your trainings in dog sports.
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
DOI to SciHub

Quickly download research
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Dokuwiki Android

Access in local to your dokuwiki
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
DoliDroid

Front-end application to use any Dolibarr ERP CRM instances
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Dollphone Icon Pack

Cute icon pack that isn’t overly hyperactive
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Dolphin Emulator

Nintendo console emulator
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Don du Sang

Locate French Blood Donation Center of French Establishment of Blood (EFS)
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Donate your voice: CV Project

This app permits you to contribute to Common Voice from your smartphone.
- Education
- FOSS
- Free
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub
DontKillMyApp ✌️ Make apps work

The official DontKillMyApp app is here - make apps finally work properly even if
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid
Doodle Dudette

Doodle, drawing and painting for children in an Android App
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Doodle: Live Wallpapers

Colorful live wallpapers with auto dark mode and power-efficient animations
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Doors of Doom

Adventure into the dungeon of infinite doors! Behind each, a monster awaits!
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Dooz

A Tic-Tac-Tao clone, a simple pen-and-paper game
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Dosezy

Track your medications, get timely reminders, and manage your health with ease.
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Dots'n'Boxes

Classic puzzle game
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Download Navi

Download Navi is a free and Open Source download manager for Android 4.4+
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Dozenal Clock

A dozenal (duodecimal, or base-twelve) clock and homescreen/lockscreen widget.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
DozenCalc

A dozenal (duodecimal, or base twelve) calculator
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
D
DozeOff

Disable Doze on your rooted Android device
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid
DPC

Digital pedigree and chronicle
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Dragon Launcher

Fast and efficient Android launcher based on gestures and minimalism
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
DragTree

NHRA Pro Tree reaction timer — accelerometer launch detection, no internet
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Drausible

Read your Plausible Analytics stats, from plausible.io or a self-hosted server
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
DrawAnywhere

Floating canvas for drawing, annotating, and highlighting over other apps.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
Drawpile

A collaborative drawing program
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
dreamDroid

Control and streaming client for enigma2 based dreamboxes
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub
drejo player

Tiny ad-free player with reliable next/previous across mp4 + mkv folders
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Drift // Audio

Ambient sound mixer for sleep and focus on long nights and long flights
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Drill Press Assistant

Spindle speed calculator and belt position advisor for drill presses
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Drink Water!

Track water intake and get timely reminders. No accounts or ads.
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Drinkable

Explore and create cocktails with ingredients from home.
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
drip period & cycle tracker

Open-source, non-commercial and leaves your data on your phone.
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
DriveSoberly

Alcohol blood rate computer for driving
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Droid Pad

Build control interfaces for WebSocket, Bluetooth/LE, MQTT, TCP & UDP protocols.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
Droid-ify

Clutterfree F-Droid client
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
Droid_SCEP

Get certificates from a SCEP server and monitor the expiration
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
DroidCrypt

A file and text encryption tool for Android
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
DroidFish

Chess program
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
DroidFS

Store & access your files securely
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
DroidOS Launcher

Cover-screen launcher and window manager for DroidOS.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
DroidOS Trackpad

Phone-as-trackpad and keyboard overlay for DroidOS.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Droidrops

Droidrops RSS client
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
DroidShows

TV series browser and tracker
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
DroidStress

Simple CPU Stress test tool for Android
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
DroidTR IME

DroidTR IME (Turkish F/Q keyboard)
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
DroidUPnP

Play files off the network
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
droidVNC-NG

VNC server app that does not require root privileges.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
DropCount

A recreation of the classic Drop7 puzzle game for Android
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore