NClass for Windows

NClass is a free tool designed to be simple and user-friendly for easy and fast development. Properties, enums, delegates, and other language specific elements are fully supported with strict syntactical and semantical verification. Design your application with just a few clicks the main goal is to provide class designer that is very intuitive to use. Diagram styles help you to create professional looking diagrams, just like in Visual Studio or other commercial products. You can generate code from your models or you can also import classes from existing .NET assemblies.

Features include full C# and Java support with many language specific elements, simple and easy to use user interface, inline class editors with syntactic parsers for easy and fast editing, source code generation, reverse engineering from .NET assemblies (thanks to Malte Ried), configurable diagram styles, printing or saving to image, multilingual user interface, and mono support for non-Windows users.