Open-source communication apps

Messaging apps, email, newsletters, and social media tools for keeping in touch.

Last updated Oct 22, 2026

22 projects

wacli
Command-line WhatsApp client with local message sync and search
Communication Developer tools
2.8k
Cinny
Clean, simple web client for chatting on the Matrix network
Communication Self-hosted alternatives
3.9k
Macro
Team workspace combining email, chat, docs, tasks, CRM and AI agents
Productivity Communication Self-hosted alternatives
4.8k
FxEmbed
Rich link previews for X/Twitter and Bluesky posts in chat apps
Communication Web apps and sites Self-hosted alternatives
5.8k
Meshtastic
Firmware for small LoRa radios that pass text messages with no cell service
Hardware and IoT Communication
8.5k
bitchat for Android
Offline Bluetooth mesh messenger for Android with Nostr fallback
Communication Privacy and security
7.8k
Baileys
TypeScript library that talks to WhatsApp Web over WebSockets
Communication Developer tools
11.4k
Cloudflare Temp Email
Disposable email service you deploy on your own Cloudflare account
Communication Self-hosted alternatives Privacy and security
Dream Hunter12k
Social-Auto-Upload
Command-line uploader that posts videos to Douyin, Bilibili, TikTok and more
Communication Media and downloads Agent skills and plugins
Alleria15.7k
OpenWA
Self-hosted REST API gateway for sending and receiving WhatsApp messages
Communication Self-hosted alternatives Developer tools
Yudhi Armyndharis16.1k
SimpleX Chat
Private messenger with no user IDs, phone numbers, or usernames
Communication Privacy and security
19.6k
whatsapp-web.js
Node.js library for automating WhatsApp through its web client
Communication Developer tools
22.8k
listmonk
Run your own newsletters and mailing lists from a single binary
Self-hosted alternatives Communication
Kailash Nadh23.9k
AiToEarn
AI agent platform for creating and cross-posting social media content
Communication AI apps Self-hosted alternatives
26.7k
Telegram Desktop
Official desktop client for the Telegram messaging service
Communication
33.3k
ntfy
Send push notifications to your phone or desktop with a simple HTTP request
Communication Self-hosted alternatives Servers and infrastructure
Philipp C. Heckel35k
Ghost
Publishing platform for blogs, paid memberships, and newsletters
Web apps and sites Communication Self-hosted alternatives
55.6k
TrendRadar
Trending-news aggregator with keyword filters, AI summaries and push alerts
AI apps Self-hosted alternatives Communication
sansan63.1k
Buzz by Block Open Source
Self-hosted team workspace where people and AI agents share channels
Communication Agent frameworks and tools Self-hosted alternatives
36.2k
bitchat
Offline Bluetooth mesh chat with Nostr fallback for internet reach
Communication Privacy and security
36.7k
SmsForwarder
Android app that forwards SMS, calls, and notifications by rule
Communication Productivity
pppscn28.5k
MoneyPrinterV2
Python CLI that automates Twitter posts, YouTube Shorts, and outreach
AI media Communication
FujiwaraChoki32.2k