Ladybird Browser

[mike]

If you want to try it today, you have to build from source. And, it only supports Unix-like operating systems (e.g., macOS, Linux).

a new fully open source browser, constructed independently from the ground up, called Ladybird.

• That Rare Breed of Browser Based on Web Standards | The New Stack
• Ladybird
• Ladybird | GitHub

[gnome]

And here’s the relevant post for setting Mojeek as the default search engine: How to set Mojeek as the Default Search Engine in Ladybird

Things may have changed since then! But Mojeek was already in the default list of search engines back then.