OSGi Projects that are
BEA WebLogic Event Server is the first and only Java application server for high-performance applications based on event driven architecture (EDA). With a built-in complex event processing (CEP) engine, WebLogic Event Server is able to process complex, streaming events.
Eclifox is an Eclipse plug-in from IBM AlpahWorks that enables Gecko-based browsers, like Firefox, access to the Eclipse IDE.
From a code point of view, Equinox is an implementation of the OSGi R4 core framework specification, a set of bundles that implement various optional OSGi services and other infrastructure for running OSGi-based systems.
More generally, the goal of the Equinox project is to be a first class OSGi community and foster the vision of Eclipse as a landscape of bundles. As part of this, it is responsible for developing and delivering the OSGi framework implementation used for all of Eclipse.
Equinox provides org.eclipse.equinox.http.jetty, an implementation of the OSGi HttpService using Jetty as the underlying engine.
Felix is a community effort to implement the OSGi R4 Service Platform, which includes the OSGi framework and standard services, as well as providing and supporting other interesting OSGi-related technologies. The ultimate goal is to provide a completely compliant implementation of the OSGi framework and standard services and to support a community around this technology. Felix currently implements a large portion of the OSGi release 4 specification, but additional work is necessary for full compliance. Despite this fact, the OSGi framework functionality provided by Felix is very stable.
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
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.