As a theoretical model of a computer, the register machine is a Turing complete model, thus an alternative to the Turing-machine. It accepts programs in a form similar to assemble code and executes them.
Mastermind is a logic game for everyone. To beat the game, you have to guess a code, that the other player (here the computer) has chosen. In this variant the code is made from digits (0-9).
As an alternative to the Visual Basic version, this tool can convert a matrix which is written in a normal matrix style (rows separated by new line and columns separated by spaces) to the Wolfram|Alpha style with curly-brackets.
Due to a request: KeySmasher! This tool presses a given key in defined pace.
These two tools are mode to generate the code that can be inserted into the config of any trader in the Minecraft modification “Citizens“. There are two versions of this tool, one written in Excel and one in Visual Basic Classic.