Software Research, Inc.
The eValid Website Testing and Analysis Suite helps organizations maintain e-Business presence, improve website quality and integrity, reduce down time, control costs, and enhance quality and delivered performance to increase customer satisfaction and profits. The eValid Suite supports browser-based client-side functional testing and validation, page timing and tuning, transaction monitoring, web site spidering and analysis, and realistic server loading. eValid is comprehensive, easy to use, scalable, cost-effective, and applies to any web browser enabled applications.
http://www.soft.com/

Software Testing Sucks
Learn Software Testing. Learn how to make it fun
http://www.softwaretestingsucks.com/

Software QA Test Resource Center
Extensive SOFTWARE QA and TESTING information - large FAQ, lists of resources, and listing of 390 web site testing/management tools.
http://www.softwareqatest.com/

Software Tester
Portal for the USA based software testing job hunter containing US testing jobs, career advice and articles about software testing.
http://www.softwaretester.com/

Extreme Testing
Software Quality Assurance. Software Testing Resources: Testing Methodology and Techniques, All that can be useful to any software tester. This site contains a lot of interesting information, including recommendations, a testing dictionary, links to shareware tool downloads, and reviews of books that are bound to interest software testers. Tutorials, Articles and Training. Some humor makes this site more valuable.
http://www.geocities.com/xtremetesting/

E-testing Consultancy
e-testing Consultancy is the leading source for software testing, automated testing in the UK. Our consultants are all accredited testing specialists, trained in the e-testing methodology for system performance., Software Testing and Training Services - ISEB / ISTQB
http://www.etesting.com/

Software Testing
A platform for sharing the knowledge of Software Testing, Testing Tools and Techniques, approaches and methodologies.
http://www.testinggeek.com/

The Original Software Group Ltd.
Original Software, redefining test automation - Industry estimates 30% of software testing is currently automated and manual software testing is still an important part of the process. The transition to automated software testing has, in the past, been time consuming and laborious, but it doesn't need to be. Our approach is based on actual need. We believe the key requirement is to align effort with benefit right from the very beginning. We call this approach Crawl, Walk, Run.
http://www.origsoft.com/

NSTL, Inc.
Large independent information technology testing organization. Provides hardware, software, e-commerce, internet and custom testing, government services, Multimedia Testing and Telecommunications Testing.
http://www.nstl.com/

Developer Testing, discussions about software quality
Website where staff members of Agitar Software place personal articles about what they know best: practices for software development and software testing that lead to better software quality.
http://www.developertesting.com