Some of my favorite equalizers are freebies!
Of course there is Nyquist parametric which is linked from the thread "I'll Start".
And these two awesome eq's I found recently.
LinearPhaseGraphicEQ and LinearPhaseGraphicEQ 2
LinearPhaseGraphicEQ is a 15 band graphic, works and looks great.
LinearPhaseGraphicEQ 2 is a 64 band graphic! Which allows single frequency adjustment like a parametric, awesome for mastering!
See/download them both here