Portable Task Coach is the portable version of Task Coach developed to be able to run from a USB flash drive or any other portable device. Portable Task Coach application was designed to be a simple open source todo manager that will help you manage personal tasks and todo lists. It grew out of Frank's frustration that well-known task managers, such as those provided with Outlook or Lotus Notes, do not provide facilities for composite tasks. Often, tasks and other things todo consist of several activities. Task Coach is designed to deal with composite tasks.