Usability testing, a non-functional testing technique that is a measure of how easily the system can be used by end users. It is difficult to evaluate and measure but can be evaluated based on the below parameters: ##Level of Skill required to learn/use the software. It should maintain the balance for both novice and expert user. ##Time required to get used to in using the software. ##The measure of increase in user productivity if any. ##Assessment of a user's attitude towards using the software.