Best Android Open-Source Open Source Software

Open-source password manager with a generous free tier.

Private, end-to-end encrypted messaging.

Self‑hosted grocery list and recipe manager

Cross-platform password manager compatible with Keepass 2.x

Secure, Simple and Scalable Video Conferences

Multi-platform 2D and 3D game engine

A free, open source note-taking and to-do application

Open‑source, multi‑format ebook reader for Android, Mac and Linux

Cross-platform, customizable ML solutions for live and streaming media

Barcode scanning library for Java and Android

Auto-proxy client

Free open-source Android app for secure 2-step verification tokens.

Secure password management on Android

Calendar components for React Native

Open-source Spotify client for every platform

Fast, zero-copy serialization library for games and services

Stateless password manager

A libre lightweight streaming front-end for Android

Secure CommsOS for mission-critical operations

Free, offline Android habit tracker for building long-term routines