Xamarin Studio is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The best Linux alternative is Eclipse, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Xamarin Studio and many of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Xamarin Studio are PyCharm (Freemium, Open Source), Apache NetBeans (Free, Open Source), Code::Blocks (Free, Open Source) and Qt Creator (Free, Open Source).
XVT is a software development environment for building cross-platform GUI applications in C or C++. XVT allows developers to graphically lay out an application's GUI, and provides cross-platform libraries to aid development.
Servoy is a cross-platform rapid application development and deployment environment for creating and deploying enterprise applications, on Premises, hosted, in the Cloud and as a service (SaaS). From a single code-base applications can be deployed to a native or web client.
Worklight helps you build, test, and deploy native, HTML5, and hybrid mobile apps for Android, iOS, BlackBerry, and Windows Phone devices. The free Worklight Developer Edition gives you tools and an app server—in an easy-to-install Eclipse plugin.
Laz4Android is a Lazarus for Android Package. Thanks the FreePascal team and the Lazarus team. Now Laz4Android is only run on Windows.Sorry for this! Last update:2017-12-08 FPC: 3.0.4 (win32/arm-android/i386-android/jvm-android) Lazarus:1.8.
MaxBlox is a complete application development platform. The entire system is web-based and allows the ability to build applications that operate over the web. This is architected as a Platform as a Service (PaaS) system.