Use of information and communication technologies (ICT) and the development of tools to enable communication, can change the ways in which students in higher education learn, including online learning, both as individuals and through collaboration with other learners. This paper is a review of two cases of online peer evaluation of web sites or multimedia presentations, between students from several countries. Examining the research feedback from these collaborative activities has contributed to our understanding of online learning tasks, and led to the development of a dedicated online portal for carrying out collaborative activities. We have found that there is a clear benefit to be derived from incorporating activities of this type within the learning of students in higher education. The CAB portal we have developed helps tutors, wishing to set up a collaborative activity, to address issues of reciprocity of learning outcomes and guidelines for students’ participation.