GSnap is described as 'With GSnap you can get an auto-tune effect. It can be used subtly to correct the pitch of a vocal, or, with more extreme settings, to create a robot-voice effect. It requires a monophonic input signal to operate' and is an app in the audio & music category. There are more than 10 alternatives to GSnap for a variety of platforms, including Windows, Mac, Linux, iPhone and iPad apps. The best GSnap alternative is Auto-Tune. It's not free, so if you're looking for a free alternative, you could try Voxal or Voloco. Other great apps like GSnap are Celemony Melodyne, TalentedHack, Autotalent and Graillon.