UserZoom https://www.userzoom.com
Tobii Tobii Pro eye tracking provides compelling objective data that reveals the human behavior behind usability problems. https://www.tobii.com
Optimal Workshop Optimal Workshop is a user research platform that makes life easier for anyone trying to design things better. Their tree testing, card sorting, first-click, survey and qualitative research tools enable organizations, big and small, to test, benchmark and make evidence-based design decisions. https://www.optimalworkshop.com
Marketing Systems Group MSG is a global provider of market research solutions. Our “all in one” ARCS enterprise engagement platform is used to manage, identify, qualify, schedule and track participants for UX research. https://www.m-s-g.com/Web/Index.aspx