Just like you can have Google Tasks on your Android Device - you can also have this as an application on your Desktop - it does not matter what operating system you are using. Arch Linux is BEST :D
Type this URL in your browser
https://mail.google.com/tasks/canvas?pli=1This will open an interface I do not think you have seen yet ;-)
A full fledged Tasks application - you can now pin it as an App in Firefox or other browsers have a desktop link to this website.