Chord detection algorithms?

Question

I am developing software that depends on musical chords detection. I know some algorithms for pitch detection, with techniques based on cepstral analysis or autocorrelation

Answer 1

Also http://www.schmittmachine.com/dywapitchtrack.html

The dywapitchtrack library computes the pitch of an audio stream in real time. The pitch is the main frequency of the waveform (the 'note' being played or sung). It is expressed as a float in Hz.

And http://clam-project.org/ may help a little.