So far, Open Source projects were very successful in well-defined technical areas. A very common problem of Open Source business application projects were endless discussions about approach and priorities - and no releases.
Compiere changed this. Based on a advanced Java J2EE architecture and data dictionary, Compiere experienced over 150,000 downloads and an increasing active user base. As a result, Compiere is usually rated among the top ten projects in SourceForge.
Compiere provides integrated ERP and CRM functionality for small-medium companies worldwide and just released it's new release 2.4.2. For details see: http://www.compiere.org.