Ubuntu - Ubuntu is a Debian Linux-based open source operating system for desktop computers.
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
Android - Android is an open source mobile operating system initially released by Google in 2008 and has since become of the most widely used operating systems on any platform.
Clockify - Simple and free time tracker. Perfect for small and mid-sized businesses as well as freelancers. Unlimited projects and users, unlimited productivity. Get all the premium functionalities, completely free.
Windows 10 - Windows 10 unveils new innovations & is better than ever. Shop for Windows 10 laptops, PCs, tablets, apps & more. Learn about new upcoming features.
Cattr - Cattr is a free open-source self-hosted time tracker with desktop clients for windows, mac, linux.