Google Now is arguably one of the greatest voice command-based applications around, but if you're unfortunate enough to not be able to run it via Android 4.1 (Jelly Bean) or the various ports made for Android 4.0 (Ice-cream Sandwich) devices, then this might be for you.
An XDA Senior Member J_M_V_S has released a simple guide that will show you how to embrace some of Google Now’s unmatched functionality through Google Talk. As expected, it doesn't offer every feature that Google Now does, but it's better than nothing, right? The idea of the application is that it will answer any inquiry as long as you know how to type it. Some example commands are:
Score: Let’s you search the score of the specified team
Weather: Tells you the current weather on defined location
Getting the feedback from the server is extremely easy, as all users need to do is add firstname.lastname@example.org to their Google Talk application and they're good to go. The theory behind the application is that although it doesn't offer they complete Google Now experience, it'll offer a good selection of commands, and if users like it, then they should definitely pick up a Jelly Bean-ready Android device.