Hello everyone!
I've develop and Arduino library to handle AT Commands without the need of the GSM library. This lib can be used with Bluetooth, GSM, WiFi or any other kind of module that communicates using AT Commands.
It was made because first I wanted not to block code execution while waiting for a response and secondly, because is very very lightweight.
This comes with a price, the user needs to have some knowledge over wich AT CMDs uses the module but it's not a big deal.
I hope it helps someone out there.
Best Regards