Best Android Free Open Source Software

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

Free and open-source media player

A decentralized, end-to-end encrypted messenger that needs no phone number or email to use.

Multi-platform 2D and 3D game engine

Open-source, auto-discovering network monitoring platform for switches, routers, and servers.

A fast, private, and secure web browser that blocks trackers by default.

A privacy-focused web browser built on the source code of Firefox.

An open-source browser project that aims to build a safer, faster, and more stable way for all users to experience the web.

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

Defend yourself against tracking, surveillance, and censorship online.

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

Fast, simple, and modern VPN for secure networking

Open-source framework for building native iOS and Android apps in JavaScript or TypeScript.

Open-source team chat organized around topic threads

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

Barcode scanning library for Java and Android

Privacy-focused offline maps and GPS navigation for hiking, cycling, and driving.

Auto-proxy client

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

Secure password management on Android

Calendar components for React Native