Open source Collaborative software

Gitter

Gitter is designed to make community messaging, collaboration and discovery as smooth and simple as possible. You can easily create, organise and grow your communities, inviting others to join just in one click. (MIT)

Cross-platform

Kolab

The Kolab.org Community is a Free Software initiative building a unified communication and collaboration system that you can install on your own server. (GPL)

Cross-platform

Loomio

Loomio is an open-source web application that helps groups make better decisions together. Bring together the right people and the right information. Accessible, easy to use, customisable, with fine-grained options for privacy and security. (AGPL)

Cross-platform

Mattermost

Mattermost is an open source, self-hosted Slack-alternative. As an alternative to proprietary SaaS messaging, Mattermost brings all your team communication into one place, making it searchable and accessible anywhere. (MIT)

Cross-platform

OnlyOffice

OnlyOffice is a multifunctional office suite that enables you to store and co-edit documents, manage projects, email correspondence and customer relations in one place. (AGPL)

Cross-platform

Open-Xchange

Open-Xchange is the information and knowledge headquarters of a company. Open-Xchange combines e-mail, appointment, contact and task management with intelligent document management. (GPL)

Cross-platform

Twake

Twake is a secure open source collaboration platform to improve organizational productivity. Twake offers all the features for collaboration: team chat, file Storage, team Calendar, task Management, video call and conferencing and real time document collaboration. (AGPL)

Cross-platform

Zimbra

Zimbra is a client and server platform for next-generation messaging and collaboration. (MPL)

Cross-platform

Zulip

Zulip is a powerful, open source group chat application that combines the immediacy of real-time chat with the productivity benefits of threaded conversations. Zulip is 100% open source software, built by a vibrant community of hundreds of developers from all around the world. (Apache)

Linux

9 applications