EyeRest
A lightweight Windows tray application for the 20–20–20 rule
...The application sits quietly in the system tray and uses gentle pop-up notifications or full-screen break prompts to encourage users to rest their eyes, follow the 20-20-20 rule, or complete other scheduled pauses without disrupting workflow. Users can configure how often reminders appear, how long breaks should last, and define quiet hours when reminders are paused — making it adaptable for both focused work and creative sessions. EyeRest typically includes motivational or instructional content during breaks to reinforce good ergonomics, promoting reduced eye strain, improved focus, and overall wellness for anyone who spends extended periods at a computer.