A directory search engine relies on human editors to categorize and organize websites into hierarchical directories based on topics and subtopics. Users navigate these directories to find relevant websites. Historically, examples include the Yahoo! Directory (now defunct) and Open Directory Project (DMOZ). The evolution from directory-based to crawler-based search engines reflects the shift toward automation and scalability in handling the vast amount of web content.
In our daily lives, directory search engines are less prominent today, but they were foundational in the early Internet era for organizing information. Directories can still be valuable for users seeking curated content for niche markets and specialized industries. For businesses, listing in relevant directories can enhance visibility, credibility, and SEO, as search engines consider some directories authoritative. While trust in directories depends on their curation quality, they can complement broader search strategies.
(See also Specialized Search Engine for niche search tools.)