I have received many requests to update some of plugins here with stereo capabilities. The background is of course the extended routing possibilities, for example, it's convinient to feed a stereo bus with two separate channels and to have a single plugin on insert, for double-tracking. Thus, we very much appreciate stereo plugins nowadays. But, please be warned, these are more CPU-intensive since there are two instances loaded with each.
update: Simulanalog Guitar Suite Stereo
update: TSS GUI Wrapper Stereo