LOTR
I believe what "princegupta" is asking for is applications that can run on his mobile that is running Windows 7.0 O/S for mobile phones.
As you may or may not know, there are several O/Ss now out there for smart phones (new generation of computer enhanced mobile phones), the main ones are:
Android
BlackBerry
Windows 7.0
IOS (Apple)
There are others, as the following URL will show you, but whether you get one will depend on which manufacturer's phone you buy:
Category:Mobile phone operating systems - Wikipedia, the free encyclopedia
UK Bob
PS. If you can watch this BBC video it may throw a bit more light on the subject.
BBC News - Microsoft confident of Windows Phone growth
PPS. I've just found the following article in Computer Weekly:
Microsoft rolls out Windows Phone 7 OS update