Research In Motion (RIM) hosted a BlackBerry 10 community Port-A-Thon last Friday, resulting in 15,000 app submissions in 37.5 hours, which was confirmed in a tweet by RIM VP of developer relations Alec Saunders.

RIM incentivized developers for the event, doling out $100 for every app submitted and approved to BlackBerry App World. RIM also placed developers who had submitted more than five approved apps into a drawing for a BlackBerry 10 Dev Alpha device.

RIM has a long way to go before they can compete with the top two platforms — Google and Apple. According to ComScore, RIM dropped another one percent (7.3 percent) among the top smartphone platforms, but remained in third place, behind Google and Apple. Three of the big four U.S. wireless carriers — Verizon, AT&T and T-Mobile — confirmed to Reuters on Jan. 9 that they will offer BlackBerry 10 devices to their customers. Sprint later told The Verge that they too will carry BlackBerry 10 handsets.

RIM’s stock was up 10.25 percent at $14.95 a share at the close of today on Nasdaq.

RIM will hold a launch event in New York City for BlackBerry 10 on Jan. 30.