Companies are increasingly encouraging employees to work cooperatively, to coordinate their activities in order to reduce costs, increase production, and improve services or just to augment the robustness of the organization. This is particularly relevant in the software industry where the available time frames are quite tight. However, many software companies do not formally evaluate their team performance because the available methods are complex, expensive, slow to deliver the results or error-prone. In case of software companies that evaluate team performance, they have also to deal with team members feeling about the fairness of such evaluations. This paper presents a method intended to evaluate the software team and their members' performance in a simple and fast manner, involving also a low application cost. The method, called Team Evaluation Method (TEM), is supported by a software tool, which reduces the application effort. The proposal has been used to evaluate software development teams, and the obtained results are satisfactory.