Where can i get good free GSM libraries for Delphi or Python? Libraries i can use to send and receive sms's on my application?
Gath
For free and open source AsyncPro>
Not free but the components has active development nrComm Lib
Another solution to use SMS gateway, such as ClickAtell, with solution you can send sms using a simple post command to the gateway url or webservices.
Another SMS gateway with a Python interface is TextMagic.
Read my response to a similar question here
Get it here - completely free (previously commercial components):
A PyPi search turns up several promising Python SMS libraries. Some of them talk to a GSM modem, others work through web SMS gateways, and there's even one to interface with Apple's Sudden Motion Sensor.
I've always enjoyed this application with my Sony-Ericsson devices: