I mean this as truly constructive criticism. There are several spelling errors on the site that made me want to cringe.

It allows you to use C# without any fluff right in a console like environment caled a read-eval-print-loop (REPL).

CShell is a project sponsored and maintained by Arnova Asset Management Ltd., a quant hege fund, which uses CShell daily for their research. The main contributor from Arnova is @lukebuehler.

That said I like this idea and look forward to trying it.