Grindstone is described as 'Desktop application, produced by Epiforge Software, that allows users to create and organize tasks and to track time. It includes a range of other features that supplement this primary functionality' and is a Time Tracking tool in the office & productivity category. There are more than 50 alternatives to Grindstone for a variety of platforms, including Web-based, Windows, Mac, iPhone and Android apps. The best Grindstone alternative is Toggl Track, which is free. Other great apps like Grindstone are RescueTime, Clockify, Cattr and Chronoid.