I Have to write a google talk client & now I want to write voice chat for this . I'm using smack api from ignite realtime . I've tried the smack jingle that is based on standard jingle but it won't work with google talk . VoiceClearly offers a free Java API for Google Talk that support voice and chat , but it doesn't release this API source code for free . any body know any other API that support voice chat ? or any idea ? thanks in advance !!