Track the time spent on projects right from your menu bar. All data is stored on the open source time tracking web application Kimai. You need to have your own private Kimai installation running to use this app.
Please be aware that Kimai version 0.9.2.1306 presented for download on kimai.org is a very old version and does not have an API that TimeTracker could use!
Install the latest version of Kimai from https://github.com/kimai/kimai/releases/