Hello, guys.
I just published to the http://github.com my Python library for SIM900 GSM/GPRS modules - sim-module. It's MIT licensed and you can use it freely for commercial and non-commercial use.
You can find it here: https://github.com/JFF-Bohdan/sim-module
It can be used everywhere where you can find Python. Also (tada-da-da-dam), in Raspberry Pi.
Also, it can be used at:
PC (Windows, Linux, Mac);
ARM computers with Linux: Raspberry Pi for example.
Now it supports HTTP POST and GET requests. But soon it will be support SMS and other useful functions.
Hope you will like it! Enjoy!
UPD: you can find my future posts and updates for sim-module library in my blog.
http://bohdan-danishevsky.blogspot.com/2015/04/sim-module-python-library-for-gsm-modules.html