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Stimulator vs Caffeine: catalog facts
Stimulator	Caffeine
Free Free and open source under the MIT licence.	Free Free, with source code published on GitHub.
Linux	Linux
One switch to prevent sleep AppImage with tray icon support	One-click toggle in GNOME quick settings Supports current GNOME releases up to 50
Linux only Standalone builds are nightly rather than versioned releases	Only works on the GNOME desktop Needs a matching branch for older GNOME versions
Downloadable app	Downloadable app
Open source	Open source
License: MIT	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 September 24, 2026

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