A bundle entering a set of starting and active bundles within a bundle framework is detected by a controller bundle executed by a processor. A determination is made as to whether a manifest of the bundle includes an extension header that identifies at least one legacy application. In response to determining that the manifest of the bundle includes the extension header that identifies the at least one legacy application, at least one application proxy object is created for at least one defined entry point class of the at least one legacy application identified by the extension header. The created at least one application proxy object is registered as a service within a service registry of the bundle framework.