Any ARM based microcontroller with integrated WiFi?

I am looking for a ARM based low cost SoC with an integrated WiFi, tried different search engines and still not been able to locate one.

I would like to know if anyone knows of such device that has an integrated WiFi controller that only needs and external antenna.

I may choose other architecture than ARM, but I would prefer to stay with the CPU architecture that I already have a working SW development environment.

---- Update July 27 ----- I have found a device that has an ARM Cortex M3 plus WiFi interface, the name is Imp, they are selling a small break outboard with their IC here

http://smartmaker.com/en/home/602-electric-imp-002.html

The problem with this one is that all communication with that device MUST go through their servers. Now, the question is if there are any other companies who have such a product with an open interface rather than a closed one like Imp!

Update 2 REALTEK seems to have created the perfect low cost module for this and the modules are widely available on e-bay and AliExpress like this one:

http://fr.aliexpress.com/item/RTL8710-WiFi-Wireless-Transceiver-Module-SOC/32666025289.html

The module is sold between $2 and $4 depending on quantity and shipment. RTL8710 is based on Cortex M3 and has between 512k and 2M memory available.

There a very well written page about RTL8710 on Hackaday:

http://hackaday.com/2016/07/28/new-chip-alert-rtl8710-a-cheaper-esp8266-competitor