Friture is described as 'program designed to analyze audio input in real-time'. There are eight alternatives to Friture for a variety of platforms, including Windows, Android, Mac, VSTHost and SAVIHost. The best alternative is Spectroid, which is free. Other great apps like Friture are Signalizer (Free, Open Source), Audizr (Free), Spectralissime (Free Personal) and Visual Analyser (Free).
Real-time audio spectrum analyzer with reasonable frequency resolution across the the entire frequency spectrum. - Spectrum - Waterfall - Max-hold trace - Peak markers - Linear or logarithmic frequency scale
Signalizer is a all-in-one signal visualizing package with a bunch of unique focus-points; real-time audio visualization with optimized 3D GPU graphics, everything being scalable and zoomable gridlessly as well as being arbitrarily precise in both settings and display.
iSpectrum is an easy to use audio spectrum analyzer that allows you to view live audio in a standard frequency plot, a stereo oscilloscope view and a waterfall display. You can adjust the display resolution, center frequency and save images to disk.
TrueRTA's audio spectrum analyzer software shows you a detailed picture of what you're hearing in real-time, that is, as it happens. You can create your own professional measurement system starting with TrueRTA software on your PC.