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Trayzero vs Everdo: catalog facts
Trayzero	Everdo
Free Free and open source under the GPL 3.0.	Paid Sold as a one-time purchase rather than a subscription.
Android	Windows, macOS, Linux, Android, iOS, Browser extension
Designed around the GTD workflow Capture button on every screen and capture from the share menu	Offline-first apps on desktop and mobile End-to-end encrypted sync
Android only No mention of sync between devices	Closed source GTD structure may feel heavy for simple lists
Downloadable app	Downloadable app, Browser extension
Open source	Closed source
License: GPL-3.0-only	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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