iPhone development has created a huge business opportunity for many companies, and the possibilities are only increasing with the announcement of the iPad and constantly improving software. Part of this business involves not only developing applications, but also helping other people develop applications in an easy, hassle-free way. Two companies trying to do this, SachManya and SelfServeApplications, have recently announced new products for this very task.

iFart is an application that allows you to choose a fart noise and it’ll play it on your iPod or iPhone. Simple as that. The iFart app is also referred to as the most famous, being featured on TV nationally and international, as well as a slew of other news sites. If you think iFart is only that, it has a bunch of neat features, like a timer so you don’t have to be near you victim. In recent iFart news, a “Food Fart Pack” was released with in-app purchases.

Wolfram Alpa, a “long-term project to make all systematic knowledge immediately computable by anyone,” recently had their iPhone app accepted by Apple into the App Store. The application—which costs a nicely sized $50—is the first native Wolfram Alpha application available through download in the App Store, although the company has had an iPhone dedicated website for a while. It uses the new API the team has recently opened to allow developers to use the knowledge engine in their own applications and software.

Many people have been waiting for decent Gmail Push Notifications to come to the iPhone. There are quite a few of these applications in the App Store that try to solve this issue, and there is now also a way to get Gmail emails through Push using Google Sync and the iPhone OS 3.0′s Microsoft Exchange support. PushGmail is just one of these applications (and the cheapest that I can find) that aims to solve this issue.

As the name implies, this application is used to get complete coverage of the weather in your local area. It is a tab bar application full of various ways of getting the weather information. It works by using the iPhone’s GPS to find your location and then offering you the weather for that area. However, there is also the ability to look up any area, as you could’ve guessed.

Social News is an application focused on brining your RSS feeds to your iPhone and making it easy to keep track of those stories you want to read. It comes with a few feeds built in, but users can add the feed of any website they want. Once you have it all set up, Social News could basically be used as your only mobile RSS reader.

Wolfram|Alpa—a popular, new knowledge engine—caught the geeks by storm a while back when it launched. This site is much different from Google in that it aims to answer your questions by analyzing your words and then creating graphs and charts to display the answers. The company has now launched an iPhone specific website that fans can check out when searching on the go.

Earlier this week, I wrote about what roles the iPhone and Amazon Kindle play in allowing us to access our favorite content. Well, now it seems as if Amazon has decided to turn your iPhone into an actual Kindle 2. If their new Kindle iPhone application is any hint at what they have in mind, then it’s going to be good. Although this application doesn’t allow you to buy content straight from it (yet), you are able to use Safari to actually purchase the content. However, don’t let that sway you, this app is pretty awesome.

I am currently in the process of developing my own application for the iTunes App Store. Well, I guess you could say I am finished and waiting with eager anticipation for Apple to accept it. However, while that’s going on over in Cupertino, I though I’d share some of my experiences with the first part of developing an iPhone application: the actual coding and software. Using Apple’s XCode, the iPhone Simulator, and example code from Apple, you can have your own app up and running for free in almost no time at all. Apple has done a really great job at helping developers delve into the iPhone SDK.

If you are looking for a game that really forces you to think, and if you love word puzzles, then World Flow is for you. This “fast paced word game” involves the user in a tile board of letters that have the ability to be shifted, either up/down or left/right. With a large amount of letters available at once, it appears as if the game would be pretty easy, but it definitely makes you think.