Open source solutions for implementing ECM

Various open source solutions available in the market are :-

Solution	Platform	Features
Alfresco	Microsoft Windows and Unix-like operating systems Technologies: Java	Document Management Web Content Management (including full webapp & session virtualization) Repository-level versioning (similar to Subversion) Transparent overlays (similar to unionfs) Records Management, including 5015.2 certification Image Management Auto-generated XForms with AJAX support Integrated Publishing Repository access via CIFS/SMB, FTP, WebDAV, NFS and CMIS Activities workflow Lucene search Federated servers Multi-language support Portable application packaging Multi-platform support (officially Windows, GNU/Linux and Solaris) Browser-based GUI (official support for Internet Explorer and Firefox) Desktop integration with Microsoft Office, OpenOffice.org and LibreOffice. Clustering support Pluggable authentication: NTLM, LDAP, Kerberos, CAS Multiple Database support: MySQL, PostgreSQL (Community Edition), Oracle Database, IBM DB2, Microsoft SQL Server (Enterprise Edition)
LogicalDOC	GNU/Linux, Windows, Mac OS X Technologies: Apache_Tomcat Application Server Java J2SE (JDK 1.6 or higher) GWT (Google Web Toolkit - Ajax) Lucene Spring Framework	Document Management Document revisioning (minor and major revisions) Image Management Repository access via WebDAV and Webservice jBPM workflow Lucene search Multi-language support Multi-platform support (Windows, GNU/Linux, Mac OS X) Browser-based GUI (Internet Explorer, Firefox, Google Chrome, Safari) Desktop integration with Microsoft Office and Microsoft Outlook Clustering support Pluggable authentication: LDAP or Active Directory Multiple Database support: MySQL, PostgreSQL, Oracle, Microsoft SQL Server Documents full preview Integrated OCR and Barcode recognition Integrated TWAIN scanner support
KnowledgeTree	Microsoft Windows, Mac OS and Linux clients Technologies: PHP Apache Web Server	Document management Version control Access control through roles and permissions
ApexKB	Platform : Apache Microsoft Internet Information Services Hiawatha Cherokee or Zeus Web Servers Database: Oracle IBM DB2 Microsoft SQL Server Technologies: PHP Javascript	leverages bookmarking to create a user-submitted index engine allows users to tag any data, not just web pages provides keyword and description tags also provides expanded knowledge tags knowledge tags can be customized to meet specific requirements tag terms can be aligned with corporate taxonomies or data dictionary a tag term is highlighted if it exists in the dictionary – user can click through to read the term group based permissions and easy integration with LDAP
Nuxeo	Platform : Apache Microsoft Internet Information Services Hiawatha Cherokee or Zeus Web Servers Database: Oracle IBM DB2 Microsoft SQL Server Technologies: PHP Javascript	Content models (via XSD schemas) Document life cycle management Access controls for security Event model and event handler Query system Lock handling Configurable versioning policy Configurable persistence back-end Support for CMIS 1.0: Apache Chemistry OpenCMIS Customizable audit trail management Document Routing Service: enables user-designed workflows of documents and selection of stages (human or automated) among a shared library of steps Content annotation management (W3C Annotea) Management of relationships within RDF graphs Comment service Notifications and email alerts Import/Export in XML format Directory: users, groups, vocabularies Dashboards with an OpenSocial gadgets container Web publishing tools - Wiki, blogs, simple web page creation Content views - manage, configure, and sort content listings Faceted navigation - repository browsing with dynamic filtering on multiple facets