FOSS apps: free and open source

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

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Matrix Synapse Manager

Admin panel for Synapse homeservers manage users rooms and media
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Mattermost Beta

Secure, self-hosted workplace messaging
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Mauth

A Beautiful Two-factor Authentication app.
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
MAXS Main

Main component of MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module AlarmSet

A Module for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module Bluetooth

A Module for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module BluetoothAdmin

A Module for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module Clipboard

A Module for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module ContactsRead

A Module for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module FileRead

A Module for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module FileWrite

A Module for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module LocationFine

A Module for MAXS
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module Misc

A Module for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module NFC

A Module for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module Notification

A Module for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module PhonestateRead

A Module for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module Ringermode

A Module for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module Shell

A Module for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module SmsNotify

A Module for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module SmsRead

A Module for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module SmsSend

A Module for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module SmsWrite

A Module for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module WifiAccess

A Module for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Module WifiChange

A Module for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MAXS Transport XMPP

XMPP Transport for MAXS
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MBCompass

Compass, GPS tracker & offline maps. No ads, no tracking.
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid GitHub Zapstore
MBE Style

A fun icon pack
- System & tools
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Mebis (Unofficial)

Displays mobile Mebis website.
- Internet
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Medic Log

A simple and easy to use personal medical notes
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Medical Calendar Log

Privacy-focused medical event tracking using your device's calendar system
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid Zapstore
MedicLog

Log basic medical information
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
MediLog (Non-reproducible build)

Log health metrics such as blood pressure, weight and quite a few others
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid Zapstore
MediLog (Reproducible build)

Log health metrics such as blood pressure, weight and quite a few others
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Meditate

Meditation timer with session log, stats, and Nextcloud sync
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Meditation

An essential meditation timer
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Meditation Assistant

Feature packed meditation session timer and recorder
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
Meditation Timer

App that counts, beeps, and helps with repeating tasks, such as meditation.
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MedTimer: Med & Pill Reminder

Medication and pill reminder with log, fully offline and privacy focused
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid IzzyOnDroid GitHub Zapstore
Megrim: Migraine Log

Private, offline migraine log with automatic on-device pattern insights.
- Health & fitness
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
meine Gleitzeit - my flextime

A simple local app to track your working hours and flexitime.
- Productivity
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
Melodeon
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MemeBoard

A goofy ahh meme soundboard app for Android.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid Zapstore
MemeTastic

Meme Creator - Simple and Ad-Free
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub
Memetro

App for those who suffer from the Memetro disorder
- Navigation
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid
Memo Game (Privacy Friendly)

(SECUSO) Privacy friendly card game to find pairs of cards
- Games
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid GitHub Zapstore
Memories: Photo Management for Nextcloud

Fast, modern and advanced photo management suite. Runs as a Nextcloud app.
- Multimedia
- FOSS
- Free
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid Zapstore
Memory

Learn Devanagari letters (used by Sanskrit and Hindi) and develop your alertness
- Games
- FOSS
- Free
- In-app purchases
- No ads
- No tracking
- Android only
Google Play Aurora Store F-Droid GitHub Zapstore
MemoryGuardian

Take Control of Your Clipboard
- Security & privacy
- FOSS
- Free
- No ads
- No tracking
- Android only
F-Droid IzzyOnDroid GitHub Zapstore