Museum of a broken API

Warns against using a system usage stats APIGPL-3.0-or-later

CBTAndroid

Seven column CBT thought journalGPL-3.0-only

Apod MD

NASA Astronomy Picture of the Day with Material DesignMIT

RetroArch

Retro games and emulators on your device!GPL-3.0-only

Guessaday

Guess the day of week of a random dateGPL-3.0-only

Planetario

Solar System in your PhoneBSD-2-Clause

Momkin

See what is being saidAGPL-3.0-only

Naija Ludo +

Naija Ludo: A Modern Twist on the Classic Board GameGPL-3.0-or-later

AnkiDroid: Flashcards

Memorize anything with AnkiDroid!AGPL-3.0-or-later

TacticMaster

Chess tactic trainer based on https://database.lichess.org/#puzzles.GPL-3.0-only

Colors Overflow

Puzzle gameGPL-3.0-only

Swatch .beat clock

Internet Time clock and converterGPL-3.0-or-later

Spell4Wiki

Audio Upload Tool for Wiktionary Words and Wikimedia Commons & Wiki-Dictionary.GPL-3.0-only

Veil - Privacy focused wallet

Privacy focused VEIL coin crypto walletMIT

CanZE

Take a closer look at your ZE carGPL-3.0-or-later

X11-Basic

BASIC interpreterGPL-2.0-or-later

openHAB

Vendor and technology agnostic open source home automationEPL-2.0

addy.io

Anonymous Email ForwardingMIT

Pineapple Lock Screen (OSS)

Help you turn your phone screen off (lock screen) without using power button.GPL-3.0-or-later

openHAB Beta

Vendor and technology agnostic open source home automationEPL-2.0