xlisp for example started small in 1983 and over time added some CL features. It was also used by Autodesk as the base of Autolisp for Autocad on a zillion PCs.

xlisp for example started small in 1983 and over time added some CL features. It was also used by Autodesk as the base of Autolisp for Autocad on a zillion PCs... > The ones that looked anything like CL were pretty heavy yeah, Coral Lisp needed 1 MB RAM on a 68k Mac. Morphed into a Common Lisp then. mulisp in 85 supported 0.5MB RAM on a PC. It had some CL compatibility.