MyPaint is an easy-to-use painting program which works well with Wacom graphics tablets and other similar devices.

Alchemy is an open drawing project aimed at exploring how we can sketch, draw, and create on computers in new ways.

SketchPort is a modern environment for digital drawing with free online drawing tools.

Processing is a flexible software sketchbook and a language for learning how to code within the context of the visual arts.

Pure Data (Pd) is a visual programming language for creating interactive computer music and multimedia works.

openFrameworks is an open source toolkit designed for "creative coding". OpenFrameworks is written in C++ and built on top of OpenGL.