Waves UltraPitch - Harmonizing Plug-In (Native/SoundGrid, Download)

UltraPitch from Waves is a plug-in designed for achieving thick stereo chorusing, doubling, parallel harmonization, vocal slap back and spread effects, and much more. Using three modules it's possible to transpose, harmonize, modulate, and transform any sound. Multiple factory presets, including classic setups, are conveniently available.