What are the top 5 search engines 2021?

[Lishmalinyjames]

the top 5 search engines worldwide in terms of market share are Google, Bing, Yahoo, Baidu, and Yandex.

[Tabslogic]

Google still owns the SERP with ~91% global share, Bing trails via Copilot bundling, Yandex holds CIS turf, DuckDuckGo stays niche for privacy-pilled users.
Crawl budget, backlinks, and E-E-A-T signals still dictate rankings, so multi-engine indexing matters less than clean technical SEO.