
SharpDevelop
#develop (short for SharpDevelop) is a free IDE for C#, VB.NET and Boo projects on Microsoft's .NET platform. It is open-source, and you can download both sourcecode and executables.
Rider supports .NET Core, .NET Framework and Mono based projects. This lets you develop a wide array of applications including .NET desktop apps, services and libraries...
.NET IDE based on the IntelliJ platform and ReSharper. Supports C#, ASP.NET, ASP.NET MVC, .NET Core, Unity and Xamarin
syntax-highlighting ide