An open source, full-featured implementation of the Smalltalk programming language that is widely used in multimedia applications and educational teaching projects. Squeak is object-oriented and reflective, and it includes class libraries and virtual machine plug-ins for numerous multimedia programs. The One Laptop Per Child (OLPC) initiative utilizes Squeak in its Etoys application for learning science and math. For more information, visit www.squeak.org. See Smalltalk and OLPC.