Didn’t we tell you? The floodgates are opening for Siri tweaks now that the iPhone 4S jailbreak is available.

OpenSiri is among the Siri tweak freshman class, and it allows you to launch stock Apple apps, plus Facebook and Twitter apps using nothing but your voice.

Check out our hands-on video of OpenSiri in action…

[tube]http://www.youtube.com/watch?v=3MEzQATGClk[/tube]

Right now the tweak is limited to the stock Apple Apps and the Facebook and Twitter apps, but the developer confirms that more features are on the way.

Currently, you can launch apps using one of two voice commands: “launch” and “open”. There are no settings to adjust or anything, just install it and start using it.

I’ve confirmed that it plays nice with Hands-Free Control as well, so this will allow you to launch specific apps without so much as laying a finger on your iPhone 4S.

OpenSiri has already been submitted to BigBoss by the folks over at JailbreakNation, and should be available for free soon. When you get a chance to try it, let us know what you think.