Libervia

Multipurpose, multi frontend, libre and decentralized communication tool.

Movim is a federated blogging and chat platform that serves as a web frontend for the XMPP protocol.

HumHub is an open-source social networking and collaboration platform for intranets, knowledge bases, and community spaces.

Loomio is open-source software for helping groups make decisions together.

Converse is a modern, feature-rich, fully client-side XMPP chat app for web browsers that can run standalone or be embedded in existing sites.

mailcow is a dockerized mail server suite for self-hosted email management.

ownCloud Core is a self-hosted file sharing and collaboration platform for storing, syncing, and sharing files, calendars, contacts, and other data.

Nextcloud Server is a self-hosted platform for storing, syncing, sharing, and collaborating on files, contacts, calendars, and other data.

CryptPad is an end-to-end encrypted collaboration suite for real-time editing of documents and other team content.

NextcloudPi is a ready-to-use build and deployment image for running Nextcloud on supported hardware, containers, and Debian-based systems.

Seafile is an open source cloud storage and file synchronization system with sharing, collaboration, and privacy features.

Corteza is a low-code platform for building CRM, business process, and other structured data applications quickly.