Karen N. Johnson offers resources you can turn to for more information on various types of software tests.
Black box testing
See Cem Kaner's Google videos
Gray box testing
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Hannah Smalltree, Editorial DirectorRead the article "SOA testing using black, white and gray box techniques"
Listen to the podcast "Black, gray and white box testing explained"
Regression testing
See Cem Kaner's Google videos
Security testing
The Open Web Application Security Project (OWASP) -- An organization focused on security testing
Exploratory testing
See James Bach's site
Performance testing
See Scott Barber's Google video
See Karen N. Johnson's article on performance analysis
Cookie testing
Visit CookieCentral.com
Read this article on Web site cookie testing
Unit testing
Read the article "The importance of unit testing"
Installation testing
Visit the Microsoft patterns & practices Developer Center
This was first published in October 2007