Connectivity

qBitController
Control qBittorrent from your Android device

Meshenger
P2P voice- and video phone App.

URLCheck
Allows you to analyze (or share) urls before opening them.

LocalSend
Cross-Platform file sharing solution via WiFi.
Development

F-Droid Build Status
Shows and monitors build status from F-Droid

Shader Editor
Create and edit GLSL shaders

HexViewer
Hexadecimal viewer for Android

F-Droid Build Status
Shows and monitors build status from F-Droid
Games

AAAAXY
A nonlinear 2D puzzle platformer taking place in impossible spaces.

Unciv
4X civilization-building game

Ball2Box
Swipe to shoot the ball in over 120 Levels. Can you collect the 3 stars?
Graphics

Les Pas - Photo Album for Nextcloud
A photo album that saves all your precious memory in your private cloud

SuperImage
Sharpen your low-resolution pictures with the power of AI upscaling

Exif Thumbnail Adder
Add thumbnail in the EXIF tag of JPEG picture not having one (batch processing)

Les Pas - Photo Album for Nextcloud
A photo album that saves all your precious memory in your private cloud
Internet

omWeather
omWeather lets you watch the weather for cities and locations you are interested

openHAB Beta
Vendor and technology agnostic open source home automation

Box, Box!
Unofficial app for Formula 1 lovers!

uaTranslit
App to translit cyrilic phrases to latin using commonly used translation rules.
Money

Varengold activeTAN
2FA for online banking

Lightning Address to Invoice
Allows paying to email-like Lightning addresses from unsupported wallets

My Expenses
Easy to use personal finance manager: rich functionality and Open Source

BTC Map
See where you can spend your bitcoins
Multimedia

Les Pas - Photo Album for Nextcloud
A photo album that saves all your precious memory in your private cloud

Tuner
Musical instrument pitch tuning

RootlessJamesDSP
System-wide JamesDSP implementation for non-rooted devices

Les Pas - Photo Album for Nextcloud
A photo album that saves all your precious memory in your private cloud
Navigation

Paris Transport Traffic
Traffic informations for subway/tramway... (Paris and suburbs)

Organic Maps Offline Hike, Bike, GPS Navigation
Open-source, community-driven maps for travelers, tourists, cyclists & hikers

Railway station photos
Collect photos of railway stations for https://railway-stations.org

BTC Map
See where you can spend your bitcoins
Phone & SMS

SchildiChat
Secure messenger for Matrix with a traditional instant messaging experience

Element - Secure Messenger
Group messenger - encrypted messaging, group chat and video calls

Meshenger
P2P voice- and video phone App.

SMS to URL Forwarder
simple incoming SMS to URL forwarder
Reading

Myne: Ebook Downloader
Android application to download ebooks from the Project GutenBerg.

Feeder
An awesome Libre and Open Source RSS feed reader

Library App VideLibri
Renews books borrowed from libraries and searchs in OPACs

Infinity for Reddit
A beautiful, feature-rich Reddit client.
Science & Education

Kanji Dojo
Learn & practice writing Japanese characters

Dib2Calc
The crazy calculator. Once you get used to it, you will love it :-)

ArityCalc
Scientific calculator for Android 5+

Kanji Dojo
Learn & practice writing Japanese characters
Security

Keyoxide
Verify decentralized cryptographic identities on the go

Cryptographic ID
Attest the trustworthiness of a device using asymmetric cryptography

Varengold activeTAN
2FA for online banking

Keyoxide
Verify decentralized cryptographic identities on the go
Sports & Health

plees-tracker
Plees Tracker is a simple sleep tracker for your Android phone.

Brethap
Control your breathing during meditation.

openScale
Open-source weight and body metrics tracker, with support for Bluetooth scales
System

RootlessJamesDSP
System-wide JamesDSP implementation for non-rooted devices

Simple SMS Messenger
SMS messaging and MMS messaging app for Android, send messages fast, nice UI

Coffee
Keep display awake

RootlessJamesDSP
System-wide JamesDSP implementation for non-rooted devices
Theming

Delta Icon Pack
Minimalistic pastel icon pack for Android

Arcticons Dark
A monotone line-based icon pack

Arcticons Light
A monotone line-based icon pack

Delta Icon Pack
Minimalistic pastel icon pack for Android
Time

plees-tracker
Plees Tracker is a simple sleep tracker for your Android phone.

DeuFeiTage
Find the German public holidays per state and year

Casio G-Shock Smart Sync
Add smart functions to your Casio square BT G-Shock (B5600, B5000)

plees-tracker
Plees Tracker is a simple sleep tracker for your Android phone.