WaveMetrics produces the IGOR family of technical computing products for the Apple Macintosh Computer. WaveMetrics products are used by scientists and engineers around the world. http://www.wavemetrics.com/
Douglas Electronics, Inc. offers everything for the electronic designer, from free and commercial design software through prototyping boards and production services. http://www.douglas.com/
A PowerPC-only utility by Channel D Corporation that includes vector trace oscilloscope, spectrum analyzer, 1/3 octave RTA, spectrogram/sonogram displays, and a built-in, versatile and easy to use waveform and signal generator. http://www.channld.com/mts.html
A versatile, easy to use software-based signal generator by Channel D Corporation that is invaluable for audio testing and laboratory applications. http://www.channld.com/wvbx.html