Librarians' Index to the Internet
This is a good web directory and the page descriptions are good. There is a search option and it has some advanced search capabilities. The science section is good. Naivigation is very easy. The government and law section is also good.

WWW Virtual Library
This is an extensive collection of links with an option to search the links. There are several categories (Education, Science, Law, for some examples) and there are subcategories under those categories. Some of the page descriptions are brief.
The only complaint, and it is a minor one, is that page design varies. I think a uniform page design would have made the pages a bit easier to use.

Houston Public Library Internet Links
This is a fairly extensive collection of links. It has a search option. The law section is nice. The descriptions of the pages linked to are brief. The Texas and Houston job section includes websites for major Houston employers and some job search sites specifically for Houston. This section also includes salary and employment information.
This page can be slow.

About.com
This is a web directory with people acting as subject guides. It is pretty good and easy to navigate but the pop up adds become distracting. There is a search option but it is fairly basic. Also there is a Dogpile search box. I like the crime section.