A web directory or link directory is an online list or catalog of websites. That is, it is a directory on the World Wide Web of (all or part of) the World Wide Web. In most web directories, the entries are about whole websites, rather than individual pages within them (called “deep links”).
A business directory is a website or printed listing of information which lists businesses within niche based categories. Businesses can be categorized by niche, location, activity, or size. Business may be compiled either manually or through an automated online search software.
Here is some Internet directories site list