Stainless alternatives

Stainless is a proprietary web browser for Mac OS X that supports multi-process architecture. It offers features like parallel sessions, allowing users to manage multiple accounts on the same web service without interference.

Alternatives

Mozilla Firefox
Brave
Google Chrome
Tor Browser
Opera
ungoogled-chromium
Microsoft Edge
Pale Moon
Fennec F-Droid
Firefox Developer Edition
Safari
Falkon