not realy, but some products close to (commercial open source only) Mule ESB... Sopera (bought by talend, last month) Fuse ESB... as far as I know the SOA-World, WSO2 products are unique in terms of complete Open Source infrastructure for SOA + cloud PaaS all products licensed under Apache Software License not only libraries, but web-GUI, DEV-Tools and OSGi-P2 repositories you can follow the public mailing-lists (tip: carbon-dev and architecture) conforms to a lot of WS-standards some drawbacks very active development at WSO2, not easy to follow some products in a early stage