Break Work

Stretchly is a free and open source, cross-platform software that reminds you to take breaks when working on your computer

Solanum is a free and open source software for tracking working time and break time, which uses the pomodoro technique

BreakTimer is a free and open source cross-platform program to remind you to take breaks, save yourself from RSI and eye strain

RSIBreak is a free and open source software that periodically reminds users to take a break to prevent repetitive strain injuries (RSI)

Safe Eyes is a free and open source program for Linux users to protect against eye strain

Pomodoro Indicator – free and open source simple software, an indicator that reminds you to take a break