At its Build 2015 developer conference, Microsoft has announced it is releasing a free cross-platform code editor that will enable many developers to write modern apps for web, cloud, and mobile.
Source: Microsoft launches Visual Studio Code, cross-platform code editor for OS X, Linux and Windows
iOS and Android developers will be able to port their apps and games directly to Windows universal apps, and Microsoft is enabling this with two new software development kits. On the Android side, Microsoft is enabling developers to use Java and C++ code on Windows 10, and for iOS developers they’ll be able to take advantage of their existing Objective C code.
Source: Huge news: Windows 10 can run reworked Android and iOS apps