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Pax Web is an implementation of OSGi R4 Http Service using Jetty 6.
Prosyst
ProSyst is an OSGi and Java pioneer. The company is entirely focussed on open standards technology and actively involved in helping to create the OSGi Service
Spring Framework
The spring framework is an application framework supporting JEE(tm) style applications. Spring supports Jetty as a HTTP service in their Spring Dynamic Modules for OSGi(tm) Service Platforms, or jetty can be simply embedded in the spring framework directly or as an xbean.