Handling dates, especially date ranges, can be tricky. FileMaker's built in pop-up calendar is a good step in that your users don't need to type in dates by hand, but it isn't as friendly as the persistent date selectors available, for example, on travelocity's web site, or in Google analytics. Those sites use persistent mini-calendars so that users can see which dates and date ranges they've selected. Now NinjaCal makes it easy to get use the same kind of mini calendars in your FileMaker solutions. And you can use NinjaCal both to *select* dates, and to *reveal* the dates represented in your data.
FileMaker Pro 9 or higher
The demo is fully functional but can't be incorporated into your own FileMaker solutions.