EyeDefender is a freeware rest reminder designed to prevent Computer Vision Syndrome (CVS) resulting from working on a computer for hours. Developed by Eterlab Software
License: Free
EyeDefender is primarily focused on reducing eye strain and offers customizable break schedules, while Workrave takes a broader approach to prevent repetitive strain injuries with exercises and reminders. EyeDefender requires payment for advanced features, whereas Workrave is free and open-source.