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Caffeine vs Stimulator: catalog facts
Caffeine	Stimulator
Free Free, with source code published on GitHub.	Free Free and open source under the MIT licence.
Linux	Linux
One-click toggle in GNOME quick settings Supports current GNOME releases up to 50	One switch to prevent sleep AppImage with tray icon support
Only works on the GNOME desktop Needs a matching branch for older GNOME versions	Linux only Standalone builds are nightly rather than versioned releases
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 1, 2026

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