Collaborative systems have caused a drastic change in the way people focus work and learning, especially at a distance. P2P and grid middleware and applications have opened new interesting possibilities for collaboration and learning. P2P allowed collaborators to share their own resources, whereby grid facilitated the access to remote resources not affordable locally as well as the increase of the participants’ capacity to carry out specific tasks. Special emphasis is given to systems and applications that focus on participants that provide their own resources for the achievement of their goals. Another influencing issue concerns the analysis of both the systems performance and group interactions. The latter constitutes an important factor for group monitoring, support and performance.