I am using Windows Phone 7 from last week of October and I really love it. Recently, I have installed an app named as “AppFlow” which is an awesome app. This app tells you the exact number of aps present at Marketplace and you can download apps from it as well (connected to Marketplace).
I have just noticed that it is showing number “39977” which means that Windows Phone will reach 40,000 apps in its marketplace. The first major upgrade to Windows Phone, Mango is also here and people actually love it. I think that Marketplace is less than a year old and 40,000 is not a bad number. I would like to congratulate Microsoft and Windows Phone team on this upcoming achievement.