FFT Spectral Analysis - SpectraLAB, SpectraPLUS,

FFT Spectral Analysis - SpectraLAB, SpectraPLUS,

SpectraPRO, SpectraRTA, acoustic calculation, simulation

and sound system design

SpectraLAB v4.32.16c
SpectraLAB v4.32.17
SpectraPLUS v2.32.03c
SpectraPLUS v2.32.04
SpectraPRO v3.32.16c
SpectraPRO332 v3.32.17
SpectraRTA v1.32.12c
SpectraRTA132 v1.32.13
for more info, please send e-mail

Another one is multi-instrument, which is a sound card based oscilloscope, spectrum analyzer, signal generator, etc. The fully functional FREE trial of multi-instrument can be downloaded from the website of the same name.