The 1.0 version of TwiddleService for Mac was provided as a free download on our website. TwiddleService for Mac belongs to Productivity Tools.
From the developer:
TwiddleService is a service-menu item that lets you switch around letters you typed in the wrong sequence (e.g. fomr instead of from) it works in all service-aware programs.
You may want to check out more software for Mac, such as Synpathy, PDF Nup Maker or NeoOficina, which might be related to TwiddleService.