Before revision:  In this article, we examine the role of building working co-editors in  OT and CRDT research , and the consequential differences in the adoption of and choice between OT and CRDT in real world co-editors and industry products.
After revision:  In this article, we examine the role of building working co-editors in OT and CRDT research , and the consequential differences in the choice between OT and CRDT in real world co-editors and industry products.