While only the developer version of the much-talked about "Google Glass" has been released, popular real estate firms have already started developing apps for the wonder device. One of the first property firms to release an app for the glass is Trulia, according to New York Times.

Apparently, now when you have the glasses on and walk into a neighborhood, you can immediately receive notifications and alerts about the homes listed for sale in the area! The alerts are based on either previous data submitted at Trulia or the type of homes searched on the website, earlier.

With the app you can view photos of your favorite homes, get directions to a home in the neighborhood that catches your attention, call or email the real estate agent representing that home and even save the properties for later viewing.

Jeff McConathy, vice president of engineering for consumer services at Trulia, who also built the app in three weeks, claims that Glass is a very powerful platform as it allows the user to carry on with their current activity while providing fresh information. Therefore, he wanted to build something that delivers the objective without being intrusive.

"After spending three weeks with the device, I can say this technology is in its early days, but there's no denying it has the potential to be an incredibly powerful platform. And because real estate shopping is such an inherently mobile experience, it's perfect for a Trulia app."

"The Trulia team is continuing to tweak and improve Trulia for Glass, and we hope that sometime soon it will be available for Google Glass wearers to download," he added.

Check out a video on Trulia for Glass below:

Zillow is also gearing up to release an app soon and more creative apps are expected to follow suit. Earlier in May, Google announced the release of a few apps like Twitter, Facebook, Tumblr and Evernote for glass. All applications for "Google Glass" are called "Glassware".

So what does an ideal app for Google Glass require? Google just has four small pieces of advice for the developers:

"Keep it short and sweet for the small screen, make sure alerts are relevant, send timely information people need on the go and make tasks easier and more seamless than they are on other devices."

Read more about the Google Glass, here.