FOSS apps: free and open source

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

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I
IndiePass

IndieWeb Micropub and Microsub Client
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Indonesian for AnySoftKeyboard

AnySoftKeyboard Indonesian Language pack
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
InfiniList
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Inflation Calculator

Inflation calculator for various countries
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Infomaniak Euria

Euria, your sovereign AI assistant that respects your privacy and the planet
- Internet
- FOSS
- Free
- No ads
- Android only
Google Play Aurora Store F-Droid Zapstore
Infomaniak kDrive

The most secure cloud in Europe for SMEs and private individuals.
- Productivity
- FOSS
- Free
- No ads
- Android only
Google Play Aurora Store F-Droid Zapstore
Infomaniak kMeet

Free and secure videoconferencing solution
- Communication
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Infomaniak kSync

Automatically sync your contacts and calendars
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Infomaniak Mail

The secure messaging service for your emails
- Communication
- FOSS
- Free
- No ads
- Android only
Google Play Aurora Store F-Droid Zapstore
Information about NCBS

Information about NCBS and its surroundings.
- Education
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Infra Arcana

Infra Arcana - a Lovecraftian horror roguelike
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Init.d Light

Add missing init.d support
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Initiative Tracker

Initiative Tracker compatible with Pathfinder 2 encounter rules
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Inkcast

The companion app for Xteink X4 CrossPoint Reader
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Inner Breeze

A meditation app to guide and track your Wim Hof Breathing practice
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Inner Breeze

Syncable breathing, meditation, and habit practice app.
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
InnerTune

A Material 3 YouTube Music client for Android
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
InselChaos Schedule

A schedule app for the InselChaos
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Insigno

Report and collect garbage, earning points!
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
InstaDownload

Download Instagram media to your device
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
InstaLate

Online dictionary - Translate content directly in your apps
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Installalogs

Installation logs: Log application installations and updates
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
INSTEAD

Interactive fiction games
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Insular

Isolate your Big Brother apps
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
I
Intent Intercept

Dev tool to view inter-app communication
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Inter Profile Sharing

Easily share media and text between Android user profiles
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore Accrescent
Internet Helper for Gadgetbridge

Companion app for Gadgetbridge, to allow for controlled Internet access
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid Zapstore
Internet Radio

Discover and listen to thousands of free internet radio stations worldwide.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Interval Timer

The simplest interval timer you can imagine
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Interval Timer (Privacy Friendly)

(SECUSO) Supports circuit training sessions and helps achieve training goals.
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Intra

Encrypted DNS client
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Inure App Manager (Trial)

Fast, refined app manager for power users, with root and Shizuku support.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
Inventory

A simple app for managing inventory of electronic components.
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Inventum

Learn more about your favorite movies and TV shows
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
InviZible Pro: Tor & Firewall, DNSCrypt & I2P

Combine the strengths of Tor, DNSCrypt and I2P for security and anonymity
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Invoice Ninja

Invoice your clients, accept payments, track expenses & time billable-tasks
- Finance
- FOSS
- Free
- In-app purchases
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Ion Launcher

A beautiful, functional and customizable launcher
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
IPCalc Android

IP tool: subnet calculations, network, broadcast, binary conversion, and geoloca
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
I
IPCam Demo

MJPEG video streaming on Android
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
IPerf3Client

iPerf3 is a tool for active measurements of the max bandwidth on IP networks.
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore
IPFSDroid

IPFS Tool
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
IPTV Mine Pro

Watch live TV channels, movies, and shows from M3U playlists.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
IR Blaster Remote

Another Universal IR remote: Hex/Raw, Flipper Zero, LIRC, IRPlus + Signal Tester
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
IR Remote

IR TV Remote
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Iremi Breathing App

App that gives breathing exercises to reduce anxiety
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
IREX Mobile App

IREX mobile application
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Iris Gallery

Fast, private, 100% offline gallery with photo editor and EXIF inspector
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Iris Keyboard

Advanced FOSS keyboard with AI Copilot, translation, and key sound synthesis
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore