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C# Programmable Calculator

How cool is a calculator that you can actually program what each button does using C#? Look for yourself:

C# Programmable Calculator is a Reverse Polish Notation (RPN) calculator with custom buttons programmable in C#.“

Its shareware, but the unregistered version still gives you 20 programmable buttons. I'll never need more than that :)

Blog: The Software Simplist

Feedable is Scriptable