any good oscilloscope programs out there (free?) ?

I had the idea to analyze a live sound input in the fashion of an oscilloscope, and rather than actually buying a real one, I was wondering if there were any programs out there that are available; possibly free ones.

Here’s another one

Note also that it is wise to buffer the input in some way to avoid blowing up up your sound card.

See [hitsquad = free- and shareware search engine, no commercial link]

Note that the main reason why soundcard-oscilloscope software today is not developed anymore is that with standard 16-bit soundcards the sample frequency is too low and the s/n-ratio too bad for real good analysis - but it’s still lots of fun.