We're currently experimenting with OSGI in Cocoon, here are pointers to useful information.
See Also
Discussions on dev@cocoon
General information
Licensing
Eclipse OSGi implementation (Equinox)
OSGi & Component management
Other opensource OSGi implementations
Embeding OSGi within a servlet
- Knopflerfish in servlet - discussed at the Knopflerfish forum
- There was also a discussion on one of the Eclipse lists or newsgroups, either platform or Equinox, but I cannot find it