Oaklisp
Oaklisp is a portable object-oriented Scheme by K. Lang and Barak Perlmutter of Yale University. Oaklisp uses a superset of Scheme syntax. It is based on generic operations rather than functions, and features anonymous classes, multiple inheritance, a strong error system, setters and locators for operations and a facility for dynamic binding.
Version 1.2 includes an interface, bytecode compiler, run-time system and documentation.
["Oaklisp: An Object-Oriented Scheme with First-Class Types", K. Lang et al, SIGPLAN Notices 21(11):30-37 (Nov 1986) (OOPSLA '86)].
This article is based on material taken from the Free On-line Dictionary of Computing prior to 1 November 2008 and incorporated under the "relicensing" terms of the GFDL, version 1.3 or later.