NextCloud
Nextcloud is the industry-leading, fully open-source, on-premises (self-hosted) content collaboration platform. Teams access, share and edit their documents, chat and participate in video calls and manage their mail and calendar and projects across mobile, desktop and web interfaces.
Hub integrates the four key Nextcloud products Files, Talk, Groupware and Office into a single platform, optimizing the flow of collaboration. Eliminate the confusing hodgepodge of different SaaS tools and the compliance, security, cost and productivity issues that come with it and standardize on a single solution with Nextcloud Hub.