SlimTimer is described as 'From the SlimTimer you can quickly create, track, and even share tasks with your coworkers. Then run reports of not only your time but also that of your coworkers and reportees' and is a Time Tracking tool in the office & productivity category. There are more than 100 alternatives to SlimTimer, not only websites but also apps for a variety of platforms, including Windows, Mac, iPhone and Android apps. The best SlimTimer alternative is Toggl Track, which is free. Other great sites and apps similar to SlimTimer are Hourglass, ManicTime, RescueTime and Cattr.