A set of C++ language extensions to facilitate aspect-oriented programming with C/C++. Currently just a research prototype. [Freeware]

Module adding simple aspect-oriented programming concepts to Ruby. Provides join points, advice, aspects, regexps, and pointcut parameters. [Open Source, LGPL]

General-purpose aspect-oriented extension to Smalltalk, in the Squeak environment.

A general purpose Aspect-Oriented Programming, Generative Programming, and CASE toolkit for Python. [Open Source, BSD-like]