Tools

The Secure CommsOS™ for mission-critical operations

a self-hosted server tracking what you read/watch/listen/play, powering a global distributed community federating via ActivityPub and (a bit of) ATProto.

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

Federated single-user microblogging software

Webmail built for the 21st Century. A modern, self-hosted email client for Stalwart Mail Server powered by the JMAP protocol. Email, calendar, contacts and files. Fast, private, and open source.

Notifuse is an open-source & modern emailing platform

The software powering Stoat

FreeScout — Free self-hosted help desk & shared mailbox (Zendesk / Help Scout alternative)

Nextcloud Talk – chat, video & audio calls for Nextcloud

Your self-hosted, globally interconnected microblogging community

Open source video conferencing app powered by LiveKit.

A federated, text-based social network with a Gemini frontend

All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).

Modern, open source, self-hosted customer support desk. Single binary app.

Fast, highly extensible, and event driven SMTP server.

Fully-featured Matrix client for Web, iOS & Android.

ActivityPub (https://www.w3.org/TR/activitypub/) server for individual users and small groups.

The Roundcube Webmail suite

Lightweight, self-hosted, open-source chat server with voice, video, text, and screen sharing. Built for small groups who want privacy, simplicity, and full control over their data.

Mail-Archiver is a web application for archiving, searching, and exporting emails from multiple accounts. Featuring folder sync, attachment support, mailbox migration and a dashboard.

A completely free and open interplanetary-microblogging platform

A complete web conferencing system for virtual classes and more!

A simple CalDAV (calendar) and CardDAV (contact) server.

Real time collaboration (RTC) server.

Preserve your emails with this open-source self-hostable email archive! This repository is a read-only mirror, please go to the gitlab repo at https://gitlab.com/Dacid99/eonvelope to contribute code.

SOGo offers multiple ways to access the calendaring and messaging data. CalDAV, CardDAV, GroupDAV, as well as ActiveSync, including native Outlook compatibility and Web interface.

Live Support chat for your website.

Scalable no-SPOF IMAP/POP3 mail server.

Mumble is an open-source, low-latency, high quality voice chat software.

Synapse: Matrix homeserver written in Python/Twisted + Rust

All-in-one mail server that implements SMTP (both MTA and MX) and IMAP. Replaces Postfix, Dovecot, OpenDKIM, OpenSPF, OpenDMARC with single daemon.

Mobile messaging platform with a focus on performance and scalability.

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

Dovecot mail server

XMPP instant messaging server.

Movim - Decentralized social platform

Modular IRC server written in C++ for Linux, BSD, Windows, and macOS.

Email (IMAP/POP3), contacts and calendar server.

Easy to use but advanced IP PBX system, VoIP gateway and conference server.

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