Internet

is a secure and open source e-mail client

Nextcloud News
Android App for Nextcloud News

DankChat
A simple app to chat on Twitch.tv

DanXi
Maybe the best all-rounded service app for Fudan University students.

Yggdrasil
Official implementation for connecting to the Yggdrasil Network from Android

Torrents-csv-android
A search engine for Torrents-csv.

Jerboa for Lemmy
An app for Lemmy, a federated reddit alternative.

Infomaniak kSync
Automatically sync your contacts and calendars

TSViewer
Simple TS client which shows you the amount and names of connected clients.

Outline Manager
The application for managing Outline VPN servers

Xenia
Browse Gemini sites using a normal web browser

OONI Probe
Open Observatory of Network Interference (OONI)

Moshidon
Mastodon for Android but it's Material You and has more features

Box, Box!
Unofficial app for Formula 1 lovers!

Commons
Upload images to wikimedia.org

Eternity
An Lemmy client for Android, forked from the Infinity for Reddit project.

You Have Mail
Email Notification without Google Play Services

Meshenger
True P2P voice- and video phone App.

Energize
Track your food and nutrition easily and fast.

MobileInpact
MobileInpact is an unofficial client for NextInpact.

Briar
Secure Messaging, Anywhere

Tiny Weather Forecast Germany
Weather forecast based on open data from the Deutscher Wetterdienst.

Prav
A user-friendly messenger for everyone with a focus on privacy and freedom!

TRIfA
TRIfA Tox Client

ownCloud
Add an ownCloud server now and get … Your Cloud, Your Data, Your Way!

Nekome
Keep track of your anime and manga, through the use of the Kitsu API.

Stingle Photos
Stingle Photos is a secure, end-to-end encrypted gallery and sync app

TU Darmstadt Moodle Wrapper
Open Moodle links of the TU Darmstadt in the official Moodle app

Website Monitor
This app helps to monitor your websites periodically with notification.

MultiVNC
VNC viewer that aims to be easy to use and fast