The Microsoft Visual Studio Team System is a set of tools for the design, development and testing of applications.
QTP (Quick Test Professional) by HP is an automated software GUI testing tool that automates user actions on a Web or client-based computer application. QTP is primarily used for functional regression test automation.
LoadRunner by HP is a load-testing tool for testing application performance under load, emulating up to thousands of concurrent users.
TestComplete by AutomatedQA is an automated script-free testing tool based on keyword testing.
TestShell by Qualisystems is a test automation software framework that can test virtually any hardware, device or embedded system throughout the product lifecycle.
SeeTest by Experitest is a test automation tool for applications with non-standard user interfaces such as Flash, mobile phones and legacy applications.