TestLink is a open source web based TEST MANAGEMENT and test EXECUTION system under the GPL license (i.e. free to use). The tool enables quality assurance teams to create and manage their test cases as well as organize them into test plans. These test plans allow team members to execute test cases and track test results dynamically, generate reports, trace software requirements, prioritize and assign.
The tool is based on PHP, MySQL, and includes several other open source tools. We support interface to Bug tracking systems as is Bugzilla or Mantis.