Latest servicemix uses karaf as its core osgi container. So, theoretically, you should be able to put all the bundles required for activiti from the activiti-karaf into the servicemix. I have not tried this myself but you can do this
1. make the activiti-karaf system repository ( ${activiti-karaf-install_root}/system/…) available to your servicemix as one of the maven repository that servicemix can use (modify your servicemix etc/org.ops4j.pax.url.mvn.cfg) to install bundles - ( or for simple approach and for testing purpose only, you can just copy the activiti-karaf system dir to the servicemix system dir without overwriting the existing binaries in servicemix. In this case you don't need to modify the …mvn.cfg file)
2. copy ${activiti-karaf-install_root}/etc/org.activiti.karaf.cfg to servicemix's etc directory 3. add the activiti-karaf-feature feature to the servicemix (modify etc/org.apache.karaf.features.cfg) - mvnrg.activiti.karaf/activiti-karaf-feature/1.0.0-SNAPSHOT/xml/features
and restart the servicemix with clean cache ( data directory)
If you have further questions feel free to discuss this at activiti-karaf project.