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- Apache ServiceMix - an Enterprise Service Bus (the ServiceMix Kernel is based on Felix)
- Apache Sling - a JCR content based web application framework
- Apache Tuscany - an open source implementation of SCA.
- DySoWeb - A platform for dynamic component deployment.
- GlassFish - JavaEE application server.
- OW2 JOnAS - JavaEE application server.
- SIP Communicator - a multi-protocol instant messenger and SIP software phone.