"Don't make the mistake of thinking you'll need a pricey portal
for your enterprise or departmental project. The big-ticket suites
arguably offer larger feature sets and broader support, but they're
by no means the only deal in town.
"Metadot, a popular and well-respected portal server, is
available as a free download under the GNU General Public License.
Metadot is designed to run primarily on the open source LAMP
platform--Linux, the Apache Web server, the MySQL database, arid
the Perl programming language. The Perl application can also be run
on Solaris and Windows, and can be configured to use Oracle instead