So that it will be on GitHub, I have no relation to the project. Origin http:https://www.key-project.org/.

Quickstart:

cd system
make

Start the GUI:

cd ../bin
./key

I have already embedded the required Jars in this repository, as provided at http:https://www.key-project.org/download/libraries.html It's ugly, but does the trick until those academics decide to use Maven =)