Vitamin-R is a different kind of productivity tool.
Vitamin-R is not available for Windows but there are some alternatives that runs on Windows with similar functionality. The most popular Windows alternative is Freedom. It's not free, so if you're looking for a free alternative, you could try TimeSheet Reporter or HourGuard Timesheet Software. If that doesn't suit you, our users have ranked 16 alternatives to Vitamin-R and six of them are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to Vitamin-R are WindowFX (Paid), Timesheet (Paid) and Citrus (Freemium).