The best open source alternative to Alfresco Community Edition is eXo Platform. If that doesn't suit you, our users have ranked more than 50 alternatives to Alfresco Community Edition and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Alfresco Community Edition are HumHub, Mayan EDMS, Tracim and Jmix.
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.
HumHub is a free social network software and framework built to give you the tools to make teamwork easy and successful.
All you need in a team collaboration tool dedicated to small efficient teams. Chat, notes, drive, online collaborative edition, calendars, news, spaces, notifications...
Jmix provides powerful full stack architecture along with Rapid Application Development tools for easy start and fast development of modern business web applications.
NemakiWare is an Open Source CMIS-compliant platform for document management.
It uses the NOSQL database CouchDB.
Nuxeo makes it easy to build smart content applications that enhance customer experiences, improve decision making, and accelerate products to market. .
Docspell is a personal document organizer. You'll need a scanner to convert your papers into files. Docspell can then assist in organizing the resulting mess 😉.
LogicalDOC is a high-performance, intuitive document management system that offers the power of enterprise document management to mid-sized companies and large organizations. LogicalDOC can help any kind of organization anywhere in the world gain control over their documents...
Sense/Net ECM is the industry’s first open source SharePoint alternative for the .Net platform with a free Community edition, and a fully supported Enterprise edition. Manage you intra, extra and internet sites from one system.
OpenCms from Alkacon Software is a professional, easy to use website content management system based on Java and XML. OpenCms helps content managers worldwide to create and maintain beautiful websites fast and efficiently.
OpenProdoc is an ECM Document Management system with the characteristics:
Its portability and its integration of thesaurus and bibliographic references.
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CUBA is a framework for building business applications. Alfresco is document management system. (Maybe it is possible to build a DMS with CUBA, but so it is with Java, and we don't list Java as an alternative for Alfresco. ;-))