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Vivaldi vs Safari: catalog facts
Vivaldi	Safari
Free Free, funded by default search engine and bookmark placement deals.	Free Free to download and use. The software is closed source.
Windows, macOS, Linux, Android, iOS	macOS
Tab stacking, tiling and vertical tabs without a single extension Built-in mail, calendar and feed reader in a side panel	Intelligent Tracking Prevention, iCloud tab and password sync, and unusually low battery use come from being built for…
Not open source; only the modified Chromium parts are published The sheer number of settings takes real time to work through	It is proprietary and Apple-only, and its WebKit engine lags on some web platform features that Chromium ships…
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 22, 2026

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