I am using servlet bridge to run equinox inside my web application on tomcat. I need to write a framework extension using adaptor hook to include some external jars to Bundle-classpath of bundles. For that I have added an entry in config.ini for osgi.framework.extensions . And in my fragment bundle I have added hookconfigurator.properties with my custom hook configurator. But I found that the addHooks(HookRegistry hookRegistry) method of my custom hook configurator is never called. So has anybody tried writing custom hook for equinox running with servlet bridge ?