Web Test Tools
Listing of 390 web test tools and management tools - load testing, java testing, link checking, html validation, security testing, publishing control, content management.
http://www.softwareqatest.com/qatweb1.html

Test Mentor Java Edition
The Object Testing Company, World-Wide Leaders in Java and Smalltalk Testing
http://www.silvermark.com/Product/java/stm/index.html

WorkSoft, Inc.
Worksoft - Accelerating SAP Life Cycle Management. Worksoft Software Testing Solutions provides innovative software testing solutions and a unique Progression Testing approach that enable you to bring higher quality software applications to market 60% faster, cheaper and with fewer problems. The Worksoft Certify test framework gives you out of the box software test functionality that is commercially supported and maintained, plus the freedom to extend it based on your own needs and timing. Visit www.worksoft.com to find out more about their software testing solutions.
http://www.worksoft.com/

Stridge
A provider of test bridging tools also provides engineering services and develops custom test tools.
http://www.stridge.com/

Stag Software, Ltd.
STEM™ way -a new and innovative approach to QA to help customer achieve software excellence . We provide flexible engagement options - Offshoring, Offsite/Onsite QA - and outsourced quality assurance services to our customers. We focus to value-add to our customer business.
http://www.stagsoftware.com/

Test Source
TestSource is the medical workplace assessment resource, providing solutions for today's healthcare challenges.
http://testsource.com/

Web Test Tools
An project which provides tools for different test methods such as unit tests (JUnit), and different kinds of tests for applications. Additionally an implementation of internet protocols in Java is available. [GPL and LGPL]
http://wttools.sourceforge.net/

TestLog
Test plan and test case management software. Improve quality assurance and track your project
http://www.testlog.com/

VI Technology, Inc.
VI Technology Enterprise Test Systems Test Data Management
http://www.vi-tech.com

Semantic Designs, Inc. - Test Coverage Tools
Test Coverage tools
http://www.semdesigns.com/Products/TestCoverage/index.html