Time Ferret - Version 1.0.0 Time Ferret is a personal productivity time calculator that tracks the programs you use and displays the results in an easy to read format. With Time Ferret, you can easily see where your time is being spent. All yo u need to do is start Time Ferret, and it immediately begins recording the program you are currently working in, and timing how long you are working on that program. For the Home Office. Track time spent on project related software, researching (website, documents), invoicing clients. Track and report applications and documents used. Time Ferret is for self-employed or work-from-home people who want to increase their productivity, such as web designers, lawyers, financial analysts, accountants, and anybody uses a computer throughout their day. Home Users.