#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 from this site. I have personally used SharpDevelop in many free and commercial products I have developed. SharpDevelop provides many features that the Visual Studio Pro products offer but Visual Studio Express editions don’t. However, the product is not developed by Microsoft.

If you are looking for a Visual Studio IDE but just can’t afford the Visual Studio Pro licensing right now, give SharpDevelop a try.

Wing IDE is a development environment for Python. It provides powerful editing, code intelligence, testing, debugging, and search capabilities that reduce development and debugging time, cut down on coding errors, and make it easier to understand and navigate Python code.

Wing IDE has both a commercial and personal license so you’ll want to read up on that before running right into production development.