Dr. Geo is an interactive geometry program that is distributed as a universal portable application. It allows one to create a geometric sketch and manipulate it according to its constraints. It is usable at home or at school, in primary or secondary education. It is simple and effective with extended features including scripting and programming.
Kew is a simple, embeddable, container-based, object-oriented programming language. Many of its features are inspired by Smalltalk and Scheme. Its syntax is similar to Smalltalk's, but it has the compact and modular design of Scheme, along with proper closures and continuations. There is also powerful exception handling and write-your-own containers, which allow you to produce sandboxes.