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Safe Eyes vs BreakTimer: catalog facts
Safe Eyes	BreakTimer
Free Free and open source under the GPL-3.0 licence.	Free Free, with source code published on GitHub.
Linux	Windows, macOS, Linux
Can lock the keyboard during breaks Smart pause when the computer is idle	Configurable break frequency and length Working hours keep reminders out of personal time
Linux only Forced breaks may interrupt focused work	Windows installer is unsigned and triggers a warning Only break reminders, no wider activity tracking
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.