Basilisk vs Opera GX

Basilisk is an open-source web browser based on the Goanna rendering engine, a fork of Mozilla's Gecko. It aims to provide a classic browser interface with XUL extension support while maintaining modern web standards compatibility.

Opera GX is Gaming-oriented variant of Opera with CPU/RAM limiters, Twitch integration, and a customizable gaming aesthetic.. It is available under a free model. This tool falls under the browsers category.