A website catalog or also an online catalog is a structured list of links to websites. The website catalog is usually sorted into a tree according to thematic categories. The user selects the category he is interested in, possibly a more specific subcategory, and finds all the pages listed that are dedicated to the topic they are looking for.
Unlike Internet search engines, Internet catalogs are manually filled in and managed by an administrator. Although website catalogs are in decline today and are being pushed out by search engines, they play an important role in internet marketing.