Description:

STklos is a fast Scheme bytecode interpreter trying to conform to
R5RS. It is the successor of STk (a Scheme interpreter able to access
the Tk toolkit).

STklos provides an extensive and efficient Object Oriented extension
providing multiple inheritance, generic functions, multi-methods. Its
implementation relies on a CLOS-like Meta Object Protocol.

STklos also provides a connection to GTK+ allowing to make GUI in a
clean and easy way.