62 open-source messaging apps
Open Source Messaging Apps
The most popular open-source messaging apps for Android on GitHub are Jitsi Meet, Telegram for Android and Signal for Android. appsgit lists 62, 46 of them on F-Droid, each with its license, last commit and store links.
Updated Oct 8, 2026
Open Source Messaging Apps
Jitsi Meet
jitsi/jitsi-meet
Instant video conferences efficiently adapting to your scale.
Messaging & chatAndroidiOSTelegram for Android
DrKLO/Telegram
Telegram is a messaging app with a focus on speed and security.
OfficialMessaging & chatAndroidSignal for Android
signalapp/Signal-Android
A private messenger for Android.
OfficialMessaging & chatAndroid
SimpleX Chat
simplex-chat/simplex-chat
SimpleX Chat - e2e encrypted messenger without any user IDs - private by design!
OfficialMessaging & chatAndroidiOSSignal for iOS
signalapp/Signal-iOS
Signal is a free and open source messaging app for simple private communication with friends.
OfficialMessaging & chatiOS
Element Classic
element-hq/element-android
Previous generation Element.
OfficialMessaging & chatAndroid
FluffyChat Matrix Messenger
krille-chan/fluffychat
The open-source, non-profit European alternative to big tech’s messaging and vid.
Messaging & chatAndroidiOS
QUIK SMS
quik-sms/quik
Open source replacement to the stock SMS app on Android.
Messaging & chatAndroid
Mattermost
mattermost/mattermost-mobile
Secure, self-hosted workplace messaging.
OfficialMessaging & chatAndroid
Element X
element-hq/element-x-android
Sovereign. Seamless. On Matrix.
OfficialMessaging & chatAndroidRocket.Chat
RocketChat/Rocket.Chat.ReactNative
The Secure CommsOS for mission-critical operations.
OfficialMessaging & chatAndroidiOSConduit
cogwheel0/conduit
Native iOS and Android client for Open WebUI, direct OpenAI-compatible, Ollama, and Hermes agents.
Messaging & chatAndroidiOS
SpamBlocker (Call & SMS)
aj3423/SpamBlocker
Spam Call/SMS blocker.
Messaging & chatAndroid
Delta Chat
deltachat/deltachat-android
Decentralized private messenger with chat-shared tools and games.
Messaging & chatAndroid
Fossify Messages
FossifyOrg/Messages
Open-source and Ad-free SMS/MMS messaging app.
OfficialMessaging & chatAndroid
Forkgram
forkgram/TelegramAndroid
Forkgram is a fork of the official Telegram for Android application.
Messaging & chatAndroid
Databag
balzack/databag
A federated chat client designed for privacy and selfhosting.
Messaging & chatAndroidiOSCherrygram
arsLan4k1390/Cherrygram
Cherrygram is a third-party Telegram client with not many but useful modifications.
Messaging & chatAndroid
Threema Libre
threema-ch/threema-android
Secure and private messaging.
OfficialMessaging & chatAndroid
Meshenger
meshenger-app/meshenger-android
Voice- and video phone App for off-the-grid scenarios.
Messaging & chatAndroidElement X for iOS
element-hq/element-x-ios
Next generation Matrix client for iOS built with SwiftUI on top of matrix-rust-sdk.
OfficialMessaging & chatiOSSession
session-foundation/session-android
Encrypted private messenger.
Messaging & chatAndroid
Nextcloud Talk
nextcloud/talk-android
Have private video calls and chat using your own server.
OfficialMessaging & chatAndroid
SMS Import / Export
tmo1/sms-ie
Imports and exports SMS and MMS messages and other data.
Messaging & chatAndroid
SMS to URL Forwarder
bogkonstantin/android_income_sms_gateway_webhook
Simple incoming SMS to URL forwarder.
Messaging & chatAndroid
Mercurygram
Mercurygram/Mercurygram
Telegram is a messaging app with a focus on speed and security.
Messaging & chatAndroid
Deku SMS
dekusms/DekuSMS-Android
Deku is an SMS app that supports end to end encryption and photo sharing.
Messaging & chatAndroidHaven
ancsemi/Haven
Self-hosted private chat: no cloud, no telemetry, no Big Tech.
Messaging & chatAndroid
Weechat-Android
ubergeek42/weechat-android
Relay client for the WeeChat IRC client.
Messaging & chatAndroid
Watomatic
adeekshith/watomatic
Auto reply bot for WhatsApp, FB Messenger and more soon.
Messaging & chatAndroid
SchildiChat Legacy
SchildiChat/SchildiChat-android
Secure messenger for Matrix with a traditional instant messaging experience.
Messaging & chatAndroidZulip
zulip/zulip-flutter
Open-source team chat that helps teams stay productive and focused.
OfficialMessaging & chatAndroidiOSSpeak Gpt
AndraxDev/speak-gpt
Your personal voice assistant based on OpenAI ChatGPT.
Messaging & chatAndroidLocal LLMs On Android
dineshsoudagar/local-llms-on-android
Run local LLMs like Gemma, Qwen, and LLaMA on Android for offline, private, real-time chat and question answering with LiteRT and ONNX Runtime.
Messaging & chatAndroid
baresip+
juha-h/baresip-studio
VoIP and mobile calling and messaging app based on baresip library.
Messaging & chatAndroidThreema for iOS
threema-ch/threema-ios
This repository contains the complete source code of Threema for iOS.
OfficialMessaging & chatiOS
ArcaneChat
ArcaneChat/android
Fast encrypted chats for the family.
Messaging & chatAndroid
oxproxion
stardomains3/oxproxion
Chat with OpenRouter, Ollama, LM Studio and llama.cpp AI models.
Messaging & chatAndroid
DankChat
flex3r/DankChat
A simple app to chat on Twitch.tv.
Messaging & chatAndroid
Silence
x13a/Silence
Block unknown callers.
Messaging & chatAndroidNekoCrypt
WJZ-P/NekoCrypt
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✧.
Messaging & chatAndroid
WhatsAppCleaner
VishnuSanal/WhatsAppCleaner
Cleaner for WhatsApp - Clean Redundant Media and Files from Storage.
Messaging & chatAndroid
TRIfA
zoff99/ToxAndroidRefImpl
Tox Reference implementation for Android.
Messaging & chatAndroid
SchildiChat Next
SchildiChat/schildichat-android-next
Next-generation SchildiChat Matrix messenger based on Element X.
Messaging & chatAndroidSeekerClaw
sepivip/SeekerClaw
Turn your Solana Seeker (or any Android phone) into a 24/7 personal AI agent.
Messaging & chatAndroidHermes Relay
Codename-11/hermes-relay
Hermes-Relay — Your Hermes AI agent, in your pocket — chat, voice, and control.
Messaging & chatAndroidIrccloud
irccloud/android
The official Android app for IRCCloud.com ======= Chat on IRC from anywhere, and never miss a message.
Messaging & chatAndroidIrccloud for iOS
irccloud/ios
Join our #ios channel on irc.irccloud.com for feedback and suggestions so we can improve the app.
Messaging & chatiOS
Showing the top 48 of 62 by GitHub stars. Every entry is listed in the sitemap and the JSON API.
What are the best open-source messaging apps?
By GitHub stars, Jitsi Meet is the most popular (30,053 stars), followed by Telegram for Android and Signal for Android. Each page lists the license, the last commit and the F-Droid, Google Play or App Store link when the project publishes one.
Which of these apps work on iPhone?
11 of the 62 open-source messaging apps listed here run on iOS, including Jitsi Meet and SimpleX Chat, and 58 run on Android.
Are these apps on F-Droid?
46 of the 62 are on F-Droid, which builds them from source. 32 of those have no anti-features (such as ads, tracking or a non-free network service) flagged by F-Droid; each app page lists any that are.
How are these open-source messaging apps chosen?
Apps come from the F-Droid index (apps whose source code is on GitHub), GitHub topics such as android-app, flutter-app, ios-app and jetpack-compose, and a short hand-checked list of official apps that are not on F-Droid. An app is listed only if its license is OSI-approved or FSF-free (F-Droid's license first, then GitHub's), the repository has a README and a commit in the last six months and is not archived, and it has 100+ GitHub stars (F-Droid apps) or 300+ stars (everything else). Libraries, SDKs, templates, samples and demo apps are left out. Source-available apps are never listed.