FOSS apps: free and open source

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

page 77

Slate

Minimal customisable launcher. A blank slate where your apps go anywhere.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Slate

Minimal text-only Android home screen. No icons. No analytics. Zero network.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Slauncher

I use this launcher.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Sleep Noise

Noise to sleep, or to cover the room around you. Plays when you open it.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid
Sleep Timer

Simplest Sleep Timer
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid GitHub Zapstore
SleepGuard - dead man's switch

Locks your phone when you fall asleep watching videos. No ads, open source.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
SleepTimer

Timer, which activates the devices standby mode
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
SleepTimer

Audio fade-out and screen lock at the end of a countdown. No ads, no internet.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
SleepyWifi

Disables the Wi-Fi when the phone is in sleep mode
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Slideshow

View a slideshow of your images
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Slideshow Wallpaper

A Live Wallpaper showing a slideshow of user-selected images
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
SlimBook

Clean, ad-free Facebook feed with real-time content filtering
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
SlimSocial for Facebook

Browse Facebook
- Internet
- FOSS
- Free
- In-app purchases
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Slitherlink: Logic Loop Puzzle

Connect the dots to form a single continuous loop. Pure, relaxing logic puzzle.
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Slooop

Imageboard client for Android 11+
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Slovak for AnySoftKeyboard

Slovak language pack for AnySoftKeyboard
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Slovene for AnySoftKeyboard

Language pack for AnySoftKeyboard
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Slow Mail

Slow Mail is an Android email client for reading and composing emails
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Smart Card Emulator

Use your phone as contact-less smart card
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Smart Card Reader

Use your phone as contact-less smart card reader
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Smart Dock

A user-friendly desktop mode launcher that offers a modern and customizable user
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Smart Edge: Sidebar & Gestures

A highly customizable Android side panel inspired by OriginOS.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Smart EggTimer

With Smart EggTimer you can cook eggs perfectly.
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Smart Radio Telescope

Control an Az/El/polarization radio telescope mount over your local WiFi
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
SmartCookieWeb

A web browser with privacy on by default
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub
SmartFind

Find your phone with an SMS from a trusted contact
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
SmartPack-Kernel Manager

The Ultimate Tool to Manage your Kernel!
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub
SmartScan

Turn your images and videos into a personal knowledge base.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
SmartTube F-Droid

Browse media content with your own rules on Android TV
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
SmartVoice

Multilingual speech synthesis
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
SMASH — Smart Mobile App for Surveyor's Happiness

Digital field mapping app for geodiaries, fast surveys and GIS data collection.
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Smither

Lightweight Mastodon client
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid Zapstore
Smoke

Echo communications through Android.
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
SmokeStack

The fiery companion of Smoke.
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Smoking Tracker

Track your smoking and see daily, weekly, monthly and yearly statistics
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid GitHub Zapstore
SmokingYou

Minimalist, data-oriented smoking tracker with analytics, widgets, and themes.
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Smouldering Durtles

A client for WaniKani, with advanced features built in and offline reviews!
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid GitHub Zapstore
SMS Forward

SMS Forward is a simple app that allows you to redirect SMS.
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
SMS Import / Export

Imports and exports SMS and MMS messages and other data.
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
SMS Scheduler

Lets you schedule an sms to be sent at a specific time
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
SMS to URL Forwarder

Simple incoming SMS to URL forwarder
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
sms2call

Make a call when receiving a defined SMS
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
SMS2Email

Forwards SMS messages to SMTP (Email) server
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
SMSecure

Privacy-focused SMS app with encrypted conversations
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
SmsLoc

SMS based location query
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
SmsMatrix

Matrix SMS bridge
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
SmsReply

Automatic SMS replies with customizable templates
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Snakes

Make your way through an extended version of Snake with computer-controlled oppo
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore