If you needed anymore proof that the sale of apps for smartphones was a huge and booming business than the success of the App Store here it is. A company called Research2guidance has offered up the results of its app research.

According to the company, the market for apps was worth $2.2 billion in the first half of the year. To compare for all of 2009 the app market was worth only $1.7 billion. The number of apps downloaded in the first half of 2010 was 3.9 billion with only 3.1 billion downloaded in all of 2009.

The Application Store is coming in July. It’s chock full of applications too. Here’s a brief rundown. eBay has an auction application for the iPhone—available from the store for free. Loopt is an application that uses CoreLocation services to find people near you, you stalker. A dedicated TypePad client will be available for free. How about the AP delivering a news channel, that can handle photos, news, and video from the AP network. Mow Cow is a music application that allows you to have a band in your pocket, just be careful where you play. Major League Baseball even got in on the act with a baseball app for stats, results, and video. Modality will let you see anatomical images and really zoom in for some queasy fun. And that’s not a complete list either.