Open Source Communication - Custom Communication Systems Software
Found 37 self-hosted alternatives in this category.
AnyCable
Realtime server for reliable two-way communication over WebSockets, Server-sent events, etc.
Apprise
Apprise allows you to send a notification to almost all of the most popular notification services available to us today such as: Telegram, Discord, Slack, Amazon SNS, Gotify, etc
Centrifugo
Language-agnostic real-time messaging (Websocket or SockJS) server.
Chitchatter
Peer-to-peer chat app that is serverless, decentralized, and ephemeral
Databag
Federated, end-to-end encrypted messaging service for the web, iOS, and Android, supporting text, photos, video, and WebRTC video and audio calls.
GlobaLeaks
Whistleblowing software enabling anyone to easily set up and maintain a secure reporting platform.
Gotify
Notification server with Android and CLI clients (alternative to PushBullet).
Hyphanet
Anonymously share files, browse and publish _freesites_ (web sites accessible only through Hyphanet) and chat on forums
Jami
Universal communication platform which preserves the user's privacy and freedoms
Notifo
Multichannel notification server with support for Email, Mobile Push, Web Push, SMS, messaging and a javascript plugin
ntfy
Push notifications to phone or desktop using HTTP PUT/POST, with Android app, CLI and web app, similar to Pushover and Gotify.
One Time Secret
Share sensitive information securely with self-destructing links that are only viewable once.
OTS
One-Time-Secret sharing platform with a symmetric 256bit AES encryption in the browser
PushBits
Notification server for relaying push notifications via Matrix, similar to PushBullet and Gotify
RetroShare
Secured and decentralized communication system. Offers decentralized chat, forums, messaging, file transfer
Rocket.Chat
Communications platform that puts data protection first (alternative to Gitter.im and Slack)
Screego
Screego is a simple tool to quickly share your screen to one or multiple people via web browser.
Shhh
Keep secrets out of emails or chat logs, share them using secure links with passphrase and expiration dates
SimpleX Chat
The most private and secure chat and applications platform - now with double ratchet E2E encryption
Spectrum 2
Spectrum 2 is an open source instant messaging transport. It allows users to chat together even when they are using different IM networks
Stoat
Stoat is a user-first chat platform built with modern web technologies
Synapse
Server for, an open standard for decentralized persistent communication
Tailchat
Next generation noIM application in your own workspace, not only another Slack/Discord/rocket.chat.
Tiledesk
All-in-one customer engagement platform from lead-gen to post-sales, from WhatsApp to your website. With omni-channel live agents and AI-powered chatbots (alternative to Intercom, Zendesk, Tawk.to and Tidio)
Tinode
Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots.
Tuwunel
High-performance and feature-rich chat server for Matrix, and the successor to conduwuit (fork of Conduit).
WBO
Web Whiteboard to collaborate in real-time on schemas, drawings, and notes.