ECL: Embeddable Lisp

I finally found a Common Lisp implementation that is embeddable in C/C++ host programs and provides a decent foreign-function interface.

http://ecls.sourceforge.net/

But is it actually any decent? Anyone use this before? Does it have decent performance?

>>1

I used it and it was cool. I remember liking it, but that wasn't into measuring performance then.

ECL is what ZUN uses for scripting Touhou.