...is a dialect of Lisp and popularized by textbooks such as Structure and Interpretation of Computer Programs and How to Design Programs.
Most of my Scheme codes are answers to SICP, HtDP, and Project Euler problems. For reasons that are quite obvious, I will not post them here. The majority of my Scheme work was done with the PLT Scheme (now PLT Racket, but I haven't coded much under the Racket umbrella yet) implementation. Not so recently, I have been Scheming with a PLT "implementation" of MIT Scheme, (also known as "SICP Scheme").