Pandan helps you take breaks from the computer, but it is not a traditional break reminder. Pandan shows you how long you have been actively using your computer, to make you aware and let you decide when it's time to take a break, helping you form good habits.
Simple and lightweight app that helps me keep track of time, which I've found helpful to get better at gauging the time I need for certain tasks. Reminds me to take breaks without being too obtrusive or jolting me out of deep focus.