Mojeek Focus does this, up to 25 sites (optionally incl subdomains) and 25 exclusions. No signin/signup required. https://blog.mojeek.com/2022/08/mojeek-focus-

Mojeek Focus does this, up to 25 sites (optionally incl subdomains) and 25 exclusions. No signin/signup required. https://blog.mojeek.com/2022/08/mojeek-focus-search-the-web-you-want.html https://blog.mojeek.com/2022/08/mojeek-focus-search-the-web-... As most of the search alternatives rely on G/Bing in one form or another, there's not many in the position to offer this kind of customisation using an independent index. Disclaimer, I am an employee at Mojeek.