Corechange
With Coreport enterprise portals, users can create their own portals, add specialized content, assemble dynamic business processes, and manage online communities.
http://www.corechange.com

Main Portals
MAIN PORTALS (TM): Guide to the main Internet Portals by subject and by countries. One of the best Meta Search engines on the web.
http://mainportals.com

Long Beach Portals Hot Zone
Specialized Long Beach Portals featuring links to Long Beach, California events, shops, restaurants and much more.
http://www.longbeachportals.com/

UMCP Electronic Journal Page
Index of abstracts and online publications and links to other portals.
http://www.math.umd.edu/research/journals.shtml

DotCom
DotCom SRL Internet Consulting & Web Development - servicii profesionale de consultanta eBusiness, Marketing online, Internet Marketing, aplicatii Internet, eLearning, eTraining, portal b2b/b2c, online media & ePublishing
http://www.dotcom.ro/home.php

Link Software and Systems, Pvt. Ltd.
Building portals, online stores, and CRM and ERP and SCM solutions. Site includes summaries of completed projects.
http://www.link-software.com/

InmoEasy
Online software for creating real estate portals. Includes maps, 360º panoramas and search functionality.
http://real-estate-web-design.inmoeasy.com/

Quigo Technologies, Inc.
Quigo, Inc. - Content-Targeted Ad Serving and Search Engine Marketing Solutions
http://www.quigo.com/

Portlets Development for Portals
Resources and events related to portals, portal servers, and portlets to help in learing portlets and related issues.
http://portlets.blogspot.com/

Gold-Directory.com
Offers PHP scripts: autosurf, traffic, advertisement, portals, online games and other MLM schemes scripts. [Commercial]
http://www.gold-directory.com/