Hi,
Suggest any GSM and GPS modem on a sigle board
Regards, Evergreen Care, http://gsmmodem.in
mbed.org/.../
Also look at Arduino "shields" - the shield itself neither knows nor cares whether it's connected to an Arduino or anything else.
eg, this adapts Atmel's Xplained devkit connectors to the awkward Arduino shield pinout: oshpark.com/.../uR4ylZDJ
electricpcb.blogspot.co.uk/.../creating-atmel-xplained-pro-to-arduino.html
Arduinos can be programmed as just "normal" microcontrollers; eg, the Due has a Cortex-M - here's an example of using it with Keil: www.element14.com/.../1453