Ask HN: Are there any desktop metasearch engines?

I recently recalled using Copernic 2000 back in the 2000/XP days and was wondering if there is anything like it today. Are there any (maximally compatible) desktop metasearch engines around? I don't need Google, but Bing and Yandex would be nice.

I've seen people suggest Searx but it's not a desktop application but instead a self-hosted web app.