An open-source time-tracking software, Kimai for Mac proves to be an excellent tool for work time monitoring. It has a browser-based interface and comes with the ability to print out customized summaries on demand.
Freeware but reliable: Kimai for Mac works as touted, with all functions performing as expected. The user interface is neatly presented; you will find the date, time, and duration trackers on top, a wide field for entries in the middle, and four panels at the bottom that present information on users, customers, projects, and activities. Generating reports or printing summaries is a breeze.
Flexibility: The app can be used in a number of ways due to its browser-based nature. It can be installed as a single-user application on a workstation, and also as a Web service.
Does not have to be in an active window: You can close the program's browser window without stopping it. It will continue running and monitoring activities unless you press the red button on the upper right-hand corner of the main window.
Installation can be tedious: Installing the app requires that you follow specific instructions.
Only usable in fullscreen mode: The usability of the interface becomes compromised once you adjust the size of your browser window -- the different panels get cramped up or rearranged chaotically, making them mostly unusable.
Kimai for Mac ditches advanced functions to focus on what most basic-to-intermediate users need. Being browser-based, it's highly versatile and does not even have to be onscreen to continue its monitoring function. This is a great tool for personal or small business project activity and time monitoring.