LaptopCalc was made thinking in a way to use a calculator in a laptop without a numpack It uses keys like “J” to type “1”, “k” for “2” and so on. But is also great for all uses, try it and you will want to replace the default calc
VTK.NET is a .NET wrapper for the Visualization Toolkit. With it, you can write Windows Forms applications in C#, managed C++, Visual Basic, or J#. It includes a Windows Forms Control for drag and drop design of forms.