IronKonoha is Konoha implementation in C#.
Type the following command:
git clone git://github.com/tetsurom/ikonoha.git
cd ikonoha
xbuild IronKonoha.sln
REPL:
mono KConsole/bin/Debug/KConsole.exe
File:
mono KConsole/bin/Debug/KConsole.exe filename.k