Syncro - Concurrent Editing Library for Google Wave

The web accelerated the way people collaborate globally distributed. With Google Wave, a rich and extensible real-time collaboration platform is becoming available to a large audience. Google implements an operational transformation (OT) approach to solve conflicting concurrent edits. This approach works fine for text inside waves. But graphical extensions, like gadgets for collaborative process modeling, need to implement their own conflict management approach. This paper presents our lightweight library called syncro. Syncro addresses the problem for graphic-based gadgets in a general fashion and can be used for Wave gadget programming as well as for other collaboration platforms that need to maintain a common distributed state.