There are a number of web indexes available. The method of organization, as well as other features, may vary from one index to the next. Some indexes may present information alphabetically, others may take a topical approach. Topical indexes often present their resources in a hierarchical arrangement, moving from the general to the more specific. Here is one example of a topical index that is hierarchically arranged.
Web indexes use hypertext to present their lists of resources, which facilitates browsing.
For example, in a topical index, the broad topics can be presented as hypertext links which, when selected, provide links either to the web resources themselves or to subtopics that further categorize the resources. Most web indexes allow users to not only to identify a particular resource of interest, but also actually link directly to the resource from the index. Due to the vast amount of information available via the web, no single index can possibly contain links to every resource. However, web indexes can include hundreds, even thousands, of resources. Because some web indexes list so many resources, they provide a search capability to help users locate resources within the index.