MrSeb writes "Some interesting legalese found in the recent publication of the Windows Store Application Developer Agreement could signify a very big win for the open source community. The section in question states that apps released under a license from the Open Source Initiative (GPL, Apache, etc.) can be distributed in the Windows Store. Further, it says that the OSI license will trump the Microsoft Standard Application License Terms, namely the the restriction on sharing applications. As for the reasoning behind this big about-turn, it could be down to Microsoft trying to soften the blow of its Android patent litigation — or maybe Redmond is just trying to differentiate itself from Apple, which famously restricts open source-licensed apps from being sold in its iOS and Mac App Stores."