Windows Mobile 6.5

Devices like the HTC Touch Diamond and HTC HD2 powered by Windows Mobile 6.5 can also use JoikuSpot the same application that Symbian smartphones use. It is available for purchase and immediate download from joikushop.com.

Another option is WmWiFirouter (wmwifirouter.com). While a 21-day free trial of the app is available, you will have to buy the full version for Rs 940 to continue using it after that. Wi-Fi tethering is not yet available for the latest Windows Phone 7 devices yet.