Blue Cat's FreqAnalyst 2.3

It's an audio analyzer with FFT and n-th octave frequency analyzers.

Analyze audio spectrum in realtime using an RTAS plugin.

This is the "Widening" (Mid/Side) version of the Triple EQ shapeable equalizer

Free

Blue Cat's Freeware Pack includes six audio plugins in a single package.

Blue Cat's Widening LinyEQ - VST is a 9 bands linear phase Mid/Side equalizer.