Microsoft Visual 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 Microsoft Visual Studio and loads of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Microsoft Visual Studio are MonoDevelop (Free, Open Source), Apache NetBeans (Free, Open Source), Code::Blocks (Free, Open Source) and Qt Creator (Free, Open Source).
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.
OmniSharp is a family of Open Source projects, each with one goal - To enable great .NET development in YOUR editor of choice. It’s fun to say Cross Platform .NET. But is it reasonable for someone to develop .NET without Visual Studio and Windows?
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.