Communications platform that puts data protection first (alternative to Gitter.im and Slack).
TypeScriptOtheractive
Selfhosted Communication - Custom Communication Systems
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Communication - Custom Communication Systems
Notification infrastructure for developers.
TypeScriptOtheractive
Push notifications to phone or desktop using HTTP PUT/POST, with Android app, CLI and web app, similar to Pushover and Gotify.
GoApache License 2.0active
Zulip is a powerful, open source group chat application.
PythonApache License 2.0active
The most private and secure chat and applications platform - now with double ratchet E2E encryption.
HaskellGNU Affero General Public License v3.0active
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.
PythonBSD 2-Clause "Simplified" Licenseactive
Notification server with Android and CLI clients (alternative to PushBullet).
GoOtheractive
Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots.
GoGNU General Public License v3.0active
Fully-featured Matrix client for Web, iOS & Android.
TypeScriptGNU Affero General Public License v3.0active
Language-agnostic real-time messaging (Websocket or SockJS) server.
GoApache License 2.0active
Screego is a simple tool to quickly share your screen to one or multiple people via web browser.
GoGNU General Public License v3.0active
Conversational app builder (alternative to Typeform and Landbot).
TypeScriptOtheractive
Low-latency, high quality voice/text chat software.
C++Otheractive
Server for Matrix, an open standard for decentralized persistent communication.
PythonGNU Affero General Public License v3.0active
Share sensitive information securely with self-destructing links that are only viewable once.
RubyMIT Licenseactive
Distributed, secure messenger with audio and video chat capabilities.
CGNU General Public License v3.0active
Web Whiteboard to collaborate in real-time on schemas, drawings, and notes.
JavaScriptGNU Affero General Public License v3.0active
Stoat is a user-first chat platform built with modern web technologies.
JavaScriptGNU Affero General Public License v3.0active
High-performance and feature-rich chat server for Matrix, and the successor to conduwuit (fork of Conduit).
RustApache License 2.0active
Realtime server for reliable two-way communication over WebSockets, Server-sent events, etc.
GoMIT Licenseactive
Peer-to-peer chat app that is serverless, decentralized, and ephemeral.
TypeScriptGNU General Public License v2.0active
Live Support chat for your website.
PHPApache License 2.0active
Secured and decentralized communication system. Offers decentralized chat, forums, messaging, file transfer.
C++Otheractive
Whistleblowing software enabling anyone to easily set up and maintain a secure reporting platform.
PythonGNU Affero General Public License v3.0active
Federated, end-to-end encrypted messaging service for the web, iOS, and Android, supporting text, photos, video, and WebRTC video and audio calls.
TypeScriptApache License 2.0active
Anonymously share files, browse and publish freesites (web sites accessible only through Hyphanet) and chat on forums.
JavaGNU General Public License v2.0active
Multichannel notification server with support for Email, Mobile Push, Web Push, SMS, messaging and a javascript plugin.
C#MIT Licenseactive
One-Time-Secret sharing platform with a symmetric 256bit AES encryption in the browser.
GoApache License 2.0active
Spectrum 2 is an open source instant messaging transport. It allows users to chat together even when they are using different IM networks.
C++active
Keep secrets out of emails or chat logs, share them using secure links with passphrase and expiration dates.
PythonMIT Licenseactive
Notification server for relaying push notifications via Matrix, similar to PushBullet and Gotify.
GoISC Licensesteady
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).
MustacheMIT Licenseactive
Next-Gen self-hosted chat server and clients.
JavaScriptGNU General Public License v3.0active