Communication

A private messenger for Android.

短信转发器——监控Android手机短信、来电、APP通知，并根据指定规则转发到其他手机：钉钉群自定义机器人、钉钉企业内机器人、企业微信群机器人、飞书机器人、企业微信应用消息、邮箱、bark、webhook、Telegram机器人、Server酱、PushPlus、手机短信等。包括主动控制服务端与客户端，让你轻松远程发短信、查短信、查通话、查话簿、查电量等。（V3.0 新增）PS.这个APK主要是

Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail)

The main repository of Telegram X — official alternative Telegram client for Android.

Bitchat Android

permissionlesstech

bluetooth mesh chat, IRC vibes

The most beautiful SMS messenger for Android

Fully featured, open source, privacy friendly email app for Android

Status Legacy

status-im

a free (libre) open source, mobile OS for Ethereum

Element Android

vector-im

A Matrix collaboration client for Android.

Element Android

element-hq

A Matrix collaboration client for Android.

Unofficial, FOSS-friendly fork of the original Telegram client for Android

Enhanced and security-focused fork of Signal.

即时通讯，聊天，野火IM Android客户端，支持Android 4.x —— 最新

Tusky

tuskyapp

An Android client for the microblogging server Mastodon

Mastodon Android

mastodon

Official Android app for Mastodon

Voyager

aeharding

Voyager — a beautiful app for Lemmy

Proton Mail Android app

Chat app for Android that supports answers from multiple LLMs at once. Bring your own API key AI client. Supports OpenAI, Anthropic, Google, and Ollama. Designed with Material3 & Compose.

🎯 Einsen is a prioritization app that uses Eisenhower matrix technique as workflow to prioritize a list of tasks & built to Demonstrate use of Jetpack Compose with Modern Android Architecture Compone

Legacy mobile Rocket.Chat client in Kotlin for Android

Simple SMS Messenger

SimpleMobileTools

An easy and quick way of managing SMS and MMS messages without ads.

Unofficial Gitter.im (chat for GitHub) client for iOS and Android. [build with react-native]

A mod that enhances Facebook Messenger with loads of powerful features !

Abandoned. Pink modification of the official Mastodon for Android app

一款Android上的神奇又好用的全局消息加解密软件，包括文字、图片、文件加密。 (｀・ω・´)ﾉ✧

CloudGallery

AKS-Labs

CloudGallery is an Android app that lets you instantly back up all your images to Telegram using Bot API — simple, Secure, and infinite.

On-device AI for Android — LLM chat (GGUF/llama.cpp), vision models (VLM), image generation (Stable Diffusion), tool calling, AI personas, RAG knowledge packs, TTS/STT. Fully offline, zero subscriptio

WhatsAppCleaner

VishnuSanal

Cleaner for WhatsApp - Clean WhatsApp's Redundant Media Files from Storage

SubwayTooter

tateisu

Mastodon client app for Android

Pachli Android

pachli

The Pachli Android app

open source, P2P messenger without centralized server that works in a local network.

An app to update WhatsApp to the latest beta version available on Android. Based on Material Design.

Get notified on another device when your android's battery is low or full

Make a Telegram theme that matches your wallpaper in a click. Monet theme builder for Telegram (Android). The app has been removed from Google Play on May 6 2025

在安卓任何聊天软件(例如QQ或微信)中使用加密聊天,基于无障碍服务

RaccoonForFriendica

LiveFastEatTrashRaccoon

A Kotlin Multiplatform client for Mastodon and Friendica

Android E-commerce Platform. Allow customer to buy product, chat, feedback rating, make payment to retailer

Skiff releases, APKs, desktop apps, and whitepaper.

MaxVibe - модифицированная версия мессенджера MAX.

An experimental design polish of FairEmail (An Open source email client for Android)

Android AI agent app. Kotlin + Rust via UniFFI.

A Mastodon client for Android, written from scratch

A modified application for Messenger by Meta.

Anonomi Android

anonomi-org

A decentralized, privacy-first Android communication app built for hostile environments — no servers, minimal metadata, fully open source.

Free, private, offline AI assistant for Android. Chat with AI models locally — no internet needed, ever.

Android Postbox app for Anonomi Messenger, providing secure and resilient peer-to-peer communication

Passwordless authentication flow built with React Native and Expo, featuring Email OTP validation, session timer management, and direct Android APK distribution using Expo EAS.