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Helium vs Iridium Browser: catalog facts
Helium	Iridium Browser
Free Free and open source, supported by sponsors.	Free Free to download and build from source.
Windows, macOS, Linux	Linux
Ad, tracker and cookie banner blocking on by default No telemetry or background requests without consent	Blocks query and metrics reporting to Google by default Reproducible builds with auditable changes
Younger project than established privacy browsers Built on Chromium, so it follows Google's engine decisions	Distributed mainly as source tarballs, so packages depend on maintainers No mobile versions
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
No account needed	No account 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 24, 2026

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