Compare software

Helium vs Avast Secure Browser: catalog facts
Helium	Avast Secure Browser
Free Free and open source, supported by sponsors.	Free Free to download and use.
Windows, macOS, Linux	Windows, macOS, Android
Ad, tracker and cookie banner blocking on by default No telemetry or background requests without consent	Ad blocking built in Anti-tracking protection on by default
Younger project than established privacy browsers Built on Chromium, so it follows Google's engine decisions	Proprietary and tied to the Avast product range Few technical details published on the product page
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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