LabVIEW - LabVIEW offers many of the functions you'd find in a traditional script-based programming language presented in a more intuitive visual interface ideal fo engineering.

PyLab_Works - PyLab_Works is a free and open source replacement for LabView + MatLab, written in pure Python.

FlowStone - FlowStone - the new graphical computer programming tool that allows you to create your own standalone programs quicker and more easily than ever before, download for FREE!

proteus VSM - A virtual simulation environment for electronic circuits with support of digital and analog devices.

Lawson Labs - Data acquisition support for Lawson Labs high resolution data acquisition hardware and systems.

FOLD - What wacky things would you do if the price was just right?