Although useful and increasingly put into regular use, current Collaborative Working Environments (CWEs) have several limitations and relevant needs for further research. Most systems address either traditional and rigid intra- organizational collaboration scenarios or, at the opposite, completely free and unstructured open communities' inter- actions. Emerging dynamic, more flexible and ad-hoc col- laboration schemes are hardly or not supported at all. Aim- ing at getting collaborative working environments free from rigid constraints, POPEYE will consider P2P over wireless ad hoc groups, where fixed infrastructure is not a prerequi- site, where virtual communities can emerge spontaneously and share data with the appropriate quality of service for business applications (persistence, synchronisation, secu- rity,. . . ).