A complete links directory system modelled after Yahoo and inspired by The CGI Resource Index. This script is excellent. By far the best free link indexing script available.
Documentation is good and on site support adequate.
The SQL version is simply the best portal script. 6 Absolutely one of the best scripts I've ever installed. Great admin feature and very easy to work with. All in all a fine script. 6 Very configurable and the support pages are very active helping to resolve problems quickly.