More Apps, You Say? Appcelerator Raises $15 Million For Development Service

The growth of mobile apps — there are well over one million on the market already — shows no sign of slowing down, and Appcelerator, which offers a platform to create mobile apps, is capitalizing on that trend. The company today has announced that it has raised a third round of funding of $15 million.

The round announced today was led by Mayfield Fund, Red Hat and Translink Capital. Existing investors eBay (NSDQ: EBAY), Sierra Ventures and Storm Ventures — which put $9 million into the company last year — also participated. The total amount of money invested in the company to date is now $31.5 million.

As a testament to the huge popularity of apps, the company’s business model of working across both native and web platforms, and its acquisition strategy, Appcelerator has ballooned since it raised that last $9 million in October 2010.

At the time, the company’s platform was being used by 77,000 developers; today the company says that number is 1.6 million. A lot of that might mainly be down to the third of these factors: the company acquired web-app development platform Aptana in January of this year. Aptana had 1.5 million developers signed up to its services at the time.

That web-app push was further bolstered last week when Appcelerator acquired mobile gaming and HTML5 development platform, Particle Code.

To date, there have been some 30,000 apps developed on Appcelerator’s Titanium platform, according to GigaOm. That makes it one of the biggest players in this space, which is crowded with a number of other players who have also raised significant funding, such as Service2Media, which picked up $10 million in June for its cross-platform app development services.

While Appcelerator has definitely been making a push into web apps via its Aptana and Particle Code acquisitions, it has also benefited from partnering with third-parties to extend its activities in native platforms as well. Earlier this year the company inked a deal with Barnes & Nobel’s Nook to bring more app development targeted specifically at the bookseller’s tablet device.,