This article describes Espace (Electronic System for Peer Assessment and Coaching Efficiency), a student peer-feedback tool that enhances the educational quality of assignments without overburdening faculty or adding administrative costs. Developed and tested by four universities in the Netherlands, Espace focuses on qualitative feedback and formative assessment to help improve student performance. It also features an easy-to-use quality-control system for monitoring and improving the peer feedback processes. Because Espace is a Web application, users only need a browser. There are three kinds of user roles: (1) administrators; (2) tutors; and (3) students. Usually, the teacher serves as tutor, although graduate assistants could also be tutors. The administrator imports student accounts (in the form of XML files) and couples these accounts to courses. The administrator is also responsible for correctly importing assignments, assessment criteria, and feedback instructions received from the teacher (tutor). The underlying philosophy of Espace is that the software should be user-driven and adaptable. Espace supports the teacher in her teaching and therefore must be able to support many forms of peer feedback in many educational situations. Important considerations before and during the implementation of peer feedback are discussed. (Contains 1 figure and 3 endnotes.)