This demo introduces an automated collaborative requirements engineering tool, called TestMEReq, which is used to promote effective communication and collaboration between client-stakeholders and requirements engineers for better requirements validation. Our tool is augmented with real time communication and collaboration support to allow multiple stakeholders to collaboratively validate the same set of requirements. We have conducted a user study focusing on validating requirements using TestMEReq with a few groups of requirements engineers and client stakeholders. The study shows that our automated tool support is able to assist requirements engineers to effectively communicate with client-stakeholders to better validate the requirements virtually in real time. (Demo video: https://www.youtube.com/watch?v=7sWLOx-N4Jo).

Requirements validation is a crucial process to determine whether client-stakeholders' needs and expectations of a product are sufficiently correct and complete. Various requirements validation techniques have been used to evaluate the correctness and quality of requirements, but most of these techniques are tedious, expensive and time consuming. Accordingly, most project members are reluctant to invest their time and efforts in the requirements validation process. Moreover, automated tool supports that promote effective collaboration between the client-stakeholders and the engineers are still lacking. In this paper, we describe a novel approach that combines prototyping and test-based requirements techniques to improve the requirements validation process and promote better communication and collaboration between requirements engineers and client-stakeholders. To justify the potential of this prototype tool, we also present three types of evaluation conducted on the prototpye tool, which are the usability survey, 3-tool comparison analysis and expert reviews.