Portable Check Off is Check Off to-do list that sits in your menu bar packaged as portable application so you can carry around with you on any portable device, USB thumb drive, iPod, portable hard drive,memory card, other portable device (also on your internal hard disk) as long as it has 1 MB of free space and use on any Mac OS X computer, taking your to-do list with you.
More infos and download: * http://www.freesmug.org/portableapps/checkoff/
Features