42 Test engineering consultancy in the field of computer software, computer applications, internet applications, mobile applications, websites and computer security, and computer hardware and software; Software testing for others, namely, usability testing, functional testing, regression testing, unit testing, security testing, and quality testing of computer software; materials testing of computer software, namely, testing software in the area of stress resistance; Test design and testing for others in the field of software development, software engineering, computer networks and computer security; Design for others in the field of computer networks, software, software testing, and engineering for the software industry