Netbeans - NetBeans IDE 7.0. Develop desktop, mobile and web applications with Java, PHP, C/C++ and more. Runs on Windows, Linux, Mac OS X and Solaris. NetBeans IDE is open-source and free.
Orwell Dev-C - The official site of the Bloodshed Dev-C++ update, which is fully portable, and optionally ships with a 64bit compiler.
Visual Studio Code - Build and debug modern web and cloud applications, by Microsoft
C4droid - C4droid is an intelligent IDE and C/C++ compiler, allowing you to create your own application on Android devices.
Sublime Text - Sublime Text is a sophisticated text editor for code, html and prose - any kind of text file. You'll love the slick user interface and extraordinary features. Fully customizable with macros, and syntax highlighting for most major languages.
Xamarin.Android - Integrated environment for building not only native Android but iOS and Windows apps too.