Microsoft’s Windows Phone Marketplace is reportedly now home to more than 50,000 applications. That’s a relatively small figure taking into consideration that Apple’s iTunes App Store now boasts more than 500,000 apps and the Android Market is estimated to offer almost as many. However, it is double the amount of applications that were available just five months ago, in July, when the Windows Phone Marketplace only offered 25,000 apps. All About Windows Phone, which first reported the milestone and went into great detail showing the app spread, said 17,276 new Windows Phone applications were published in the last 90 days while 8,010 apps were added in the last 30 days. The site also noted that entertainment is the most popular category, with 15% of all Windows Phone applications falling into that group. The entertainment category is followed by books and reference (14%), games (14%) and tools and productivity (15%). All About Windows Phone also estimates that 58% of the apps in the store are free, 14% are paid but come with a free trial and 29% are pay-for only.