Your self-hosted, globally interconnected microblogging community

A platform for community discussion. Free, open, simple.

The communications platform that puts data protection first.

Open-Source Notification Platform. Embeddable Notification Center, E-mail, Push and Slack Integrations.

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..

Jitsi Meet - Secure, Simple and Scalable Video Conferences that you use as a standalone app or embed in your web application.

Open-source live-chat, email support, omni-channel desk. An alternative to Intercom, Zendesk, Salesforce Service Cloud etc. 🔥💬

Zulip server and web application. Open-source team chat that helps teams stay productive and focused.

Send push notifications to your phone or desktop using PUT/POST

High performance, self-hosted, newsletter and mailing list manager with a modern dashboard. Single binary app.

Simple forum software for building great communities.

Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container.

📮 A fully featured open source mail delivery platform for incoming & outgoing e-mail

Node.js based forum software built for the modern web

Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.

🐀 A link aggregator and forum for the fediverse

A privacy-aware, distributed, open source social network.

Apprise - Push Notifications that work with just about every platform!

A simple server for sending and receiving messages in real-time per WebSocket. (Includes a sleek web-ui)

🌎 A completely free and open interplanetary microblogging platform 🚀