Pharo

"Pharo is a pure object-oriented programming language and a powerful environment, focused on simplicity and immediate feedback (think IDE and OS rolled into one).

Pharo's goal is to deliver a clean, innovative, free and open-source immersive environment. Here is the to be revised Pharo vision document.

By providing a stable and small core system, excellent developing tools, and maintained releases, Pharo is an attractive platform to build and deploy mission critical applications.

Pharo fosters a healthy ecosystem of both private and commercial contributors who advance and maintain the core system and its external packages.

The features include:

• A dynamic, pure object-oriented programming language in the tradition of Smalltalk
• An IDE (integrated development environment)
• A huge library and set of external packages

http://pharo.org/

http://catalog.pharo.org/

http://smalltalkhub.com/

http://mutabit.com/grafoscopio/index.en.html