CLOS

The Common Lisp Object System is based on generic functions, multiple inheritance, and declarative method combination. Many implementations also have a meta-object protocol, or MOP, often based on that described in AMOP

Any purporting-to-conform ANSI CL implementation will have CLOS built in. There are also "add-on" implementations from before it was part of standard CL: Closette? is the code developed in the AMOP book and probably not practically useful, whereas PCL? is fully-featured (if slower than a typical tuned commercial implementation might be) and has been used as the basis for the CLOS support in e.g. CMUCL and SBCL

Web pages:

Marty Hall?'s Introduction to the Common Lisp Object System can be found here
This page describes the bare essentials of CLOS (Or would, if it weren't 404 See document at archive.org). It's from James Arvo?'s Caltech CS class.
A Brief Guide to CLOS by Jeff Dalton?.
Tae-Sun Chung?'s CLOS Overview (Or would've been one, if it weren't 404. archive://)
CLOS-DB is a database interface for the Common Lisp Object System.

Pages in this topic: COSI NetCLOS XMLisp

Also linked from: AMOP arc cl-pdb CLiCC CLIO clisp CLtL2 CommonURI CORBA ecfh-gui ECL ECoLisp GECO KR LISA MOP Online Tutorial Performance Benchmarks persistence Picasso SWIG umlisp UncommonSQL

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