Timewarrior is described as 'command line time tracking application, which allows you to record time spent on activities. You may be tracking your time for curiosity, or because your work requires it. At its simplest, you tell it to start and stop tracking time' and is an app in the Office & Productivity category. There are more than 10 alternatives to Timewarrior for a variety of platforms, including Mac, Windows, Online / Web-based, iPhone and Android. The best alternative is Toggl Track, which is free. Other great apps like Timewarrior are RescueTime (Freemium), Project Hamster (Free, Open Source), Tasklog (Paid) and Trackabi (Freemium).
Zone waits in the menubar allowing you to start tracking time in two clicks. From reports you can see how you spend your time or you can edit your Zones. Select projects, and the time range and get a CSV with all your data.
Klokki was created to solve an annoying issue that many freelancer and makers face, which is forgetting to start and pause a timer, during the work. The solution is automation, but we knew that people still want to control what should be tracked.