Apache Archiva - Apache Archiva is an extensible repository management software.
Communifire - Enterprise Social Collaboration Software
Apache Tika - Apache Tika toolkit detects and extracts metadata and text from different file types.
Workplace by Facebook - Connect everyone in your company and turn ideas into action.
Apache Ambari - Ambari is aimed at making Hadoop management simpler by developing software for provisioning, managing, and monitoring Hadoop clusters.
eXo Platform - Digital workplace solution