[harryf]

> Duckduckgo is a competitor to Google. Its based on Yandex and Bing, two other competitors to Google.

Interesting. Can you elaborate? Like is DuckDuckGo using some of Yandex’s open source? Or the Bing search API?

[Kuinox]

https://en.wikipedia.org/wiki/DuckDuckGo#Overview

[boomboomsubban]

This is their writeup on it, I think they get some kind of permission based on serving their ads but I'm not positive.

https://help.duckduckgo.com/results/sources