POPLOG
A multi-language programming environment, which includes the languages
Pop-11,
ML,
Common Lisp and
Prolog.
It supports mixed-language programming and incremental compilation and includes a comprehensive
X Window System interface.
It is built on top of a two-stack
virtual machine, PVM.
POPLOG was developed at the University of Sussex, Brighton, UK.
["POPLOG's Two-Level Virtual Machine Support for Interactive Languages", R. Smith et al, in Research Directions in Cognitive Science,
