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Flow Browser vs Sashfold: catalog facts
Flow Browser	Sashfold
Free A Raspberry Pi preview is offered as a download; the page does not state a price.	Free Free and open source under the BSD-2-Clause licence.
Linux	Windows, macOS, Linux
Independent engine not based on Chromium, WebKit or Gecko Multithreaded layout that scales with CPU cores	Independent engine with no third-party code No telemetry, sponsored tiles, account or cloud AI
Public download is a preview for the Raspberry Pi Aimed mainly at embedded and TV products rather than everyday desktop use	Early stage, with incomplete web compatibility No self-updater
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: BSD-2-Clause
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 2, 2026

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