There are two commonly used servers, from NCSA and CERN. They
both offer similar features, although there are important differences.
This list points to relevant introductory documents for these servers
(and some others that are important) and points out some of the
differences and features. For additions and suggestions to this
list mail ian.graham@utoronto.ca (please refer
to the document you are commenting on).
The NCSA httpd-1.1 is an http/1.0 compatible
server. Its most important feature is the ability to allow
server-side includes (i.e. files or script
output can be embedded within a document, on the fly).
Also popular, in part because it is
able to act as a proxy server (essential if you are
behind a firewall) , and to allow caching when it
runs as a proxy.
Server for the Macintosh. A remarkably complete server, with lots of
supporting software for AppleScripting and AppleSearching. This
package is highly recommended.