10760 apps in this category
Web Whiteboard to collaborate in real-time on schemas, drawings, and notes. (Demo) AGPL-3.0 Nodej...
Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptabl...
A simple, fast, and reliable chat server powered by Matrix. (Source Code) Apache-2.0 Rust
Open-source instant messaging
All-in-one customer engagement platform from lead-gen to post-sales, from WhatsApp to your websit...
Luke Smith's bash script to completely automate the setup of a Postfix/Dovecot/SpamAssassin/OpenD...
All-in-one mail server that implements SMTP (both MTA and MX) and IMAP. Replaces Postfix, Dovecot...
Peer-to-peer chat app that is serverless, decentralized, and ephemeral. (Source Code) GPL-2.0 Nodejs
SMTP server that sends and receives emails according to a simple configuration file, with an opti...
Lets you have an infinite number of unique inboxes. (Source Code) GPL-3.0 Python
Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) r...
Language-agnostic real-time messaging (Websocket or SockJS) server. (Demo, Source Code) MIT Go/Do...
