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Naver Whale vs Vivaldi: catalog facts
Naver Whale	Vivaldi
Free Free to download and use. The software is closed source.	Free Free, funded by default search engine and bookmark placement deals.
Windows, macOS, Linux, Android, iOS	Windows, macOS, Linux, Android, iOS
The dual-tab split view and the always-available sidebar make side-by-side reading and reference work unusually smooth.	Tab stacking, tiling and vertical tabs without a single extension Built-in mail, calendar and feed reader in a side panel
It is closed source, heavily tied to Naver's own services, and most of the interface and help is…	Not open source; only the modified Chromium parts are published The sheer number of settings takes real time to work through
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 21, 2026

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