The best open source alternative to Microsoft SharePoint is Nextcloud. If that doesn't suit you, our users have ranked more than 100 alternatives to Microsoft SharePoint and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Microsoft SharePoint are ownCloud, BookStack, MediaWiki and Sync-in.
eXo Platform is an all-in-one digital workplace solution that helps you connect, align and engage your teams around a single interface. You can use it to improve company and peer-to-peer communication, boost collaboration and manage company knowledge.
Open-source cloud storage solution built on TypeScript, Deno, and Fresh, offering a minimal, user-friendly interface, WebDAV file access, easy sharing, modular architecture, and integration with existing clients, designed for privacy and flexible self-hosting.
All you need in a team collaboration tool dedicated to small efficient teams. Chat, notes, drive, online collaborative edition, calendars, news, spaces, notifications...
Open-source, privacy-focused cloud storage using zero-knowledge encryption and blockchain technology, provides secure file transfer, end-to-end encryption, free 10 GB plan, desktop and mobile support, full user control, and no data tracking or ads.
Excellent file management and collaboration for public authorities, providers and business - or anyone who values ease of use and digital sovereignty.
Open Atrium is a Drupal distribution that allows you to confidently engage with your colleagues through convenient collaboration.
Documize creates the Enterprise Knowledge Backbone by unifying docs, wiki, reporting and dashboards — composition + coordination + discovery + distribution + workflows = faster business outcomes
Kolab Now provides a suite of intuitive apps in a user friendly environment to make your day to day online comms easier, smarter and most importantly; secure.
Liferay Portal is an enterprise web platform for building business solutions that deliver immediate results and long-term value.
Nuxeo makes it easy to build smart content applications that enhance customer experiences, improve decision making, and accelerate products to market. .
Adaptive suite integrating project, IT service, and source code management for technology teams, featuring time tracking, issue and document management, customizable dashboards, third-party integration, agile and waterfall support, and cloud deployment options.
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Open source, Security & independence: It's a great alternative to microsoft with its open standards (open source) and independent infrastructure (self-hosted or on-premise mode)