Is it possible to integrate play framework with OSGI to create plugable components? Did someone try it?
If we're discussing Play 2 then it's definitely worth acknowledging that an important and integral part of Play now is Akka, which could be seen as an alternative to OSGi. Philosophically I think Akka has a lot in common with the core principles of Play and Scala (a functional, stateless, NIO approach), while OSGi is more aligned with the Java EE/Spring camp.
That's not to say that Akka and OSGi are wholly mutually-exclusive: Akka's documentation suggests you can deploy Akka as an OSGi bundle and create some mutant app which has Akka actors firing up via an OSGi bundle.
But to answer the question, no, Play doesn't do OSGi, but it very much does do Akka.