In December 2010 SDL launched the SDL OpenExchange, now known as SDL AppStore, a web portal allowing independent developers to leverage the software's open architecture to create applications and plug-ins for SDL Trados Studio.[7] Apps can be downloaded to add functionality missing from the base product, such as legacy file support and new machine translation plugins.[8] As of 15 December 2011 over 25,000 apps have been downloaded.[9]