WebApr 4, 2023 · Soso Spider 12. Pinterestbot 13. SemrushBot 14. Dotbot 15. AhrefsBot 16. Facebook external hit 17. archive.org_bot Conclusion. What are Web crawlers or Web Spiders? In simple language, web spiders are the bots or programs used by various search engines to get details about your website and index them.