Introduction to Etoys and Squeak
Open Source Visual Learning Tools
Etoys is a visual tool for teaching children powerful ideas. It can be used to create active essays, do simulations, program games etc. Etoys is free software written in Squeak Smalltalk and has a world-wide community. Its most notable deployment is on OLPC XO laptops under Sugar as well as Gnome, but Etoys runs identically on all major computing platforms, including Mac OS X and Windows.