UPDATE (November 24) - If you have ChatGPT plus, you can try the GPT-bot version. This bot primarily searches through EA webs, if it fails to find anything relevant, it broadens the search to the whole web (more information here).
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I've made a simple website where you can limit your Google search to webs related to EA and rationalism. There are three modes:

• Basic webs (EA Forum, LessWrong, Alignment Forum, 80.000 Hours, ACX, SSC)
• Search by topics (webs, which Google thinks are related with topics like Effective Altruism)
• Search webs + blogs (basic webs, blogs listed here and here, webs of EA-adjacent orgs listed here)  (webs listed at ea.news)

Note that the first few results tend to be ads.

I've made the web with near-zero programming experience using Google's Programmable Search Engine app and ParseHub for webscraping links. You can access the full list of webs here.