DDG uses a combination of Bing, Yahoo and Yandex results. From what I can tell they don't index SPA sites very well: https://www.reddit.com/r/duckduckgo/commen

DDG uses a combination of Bing, Yahoo and Yandex results. From what I can tell they don't index SPA sites very well: https://www.reddit.com/r/duckduckgo/comments/90ypqz/ddg_crawler_and_single_page_applications_spa/ https://www.reddit.com/r/duckduckgo/comments/90ypqz/ddg_craw... A comment from July 2018: > We get our results from various sources, mostly Bing, Yahoo and Yandex (more info: https://duck.co/help/results/sources https://duck.co/help/results/sources ) so if/when they introduce support for SPAs, we should get that too. I don't know what their plans are for this, however.