Abstract: Disclosed is an apparatus for sharing a collaboratively edited document according to an exemplary embodiment of the present disclosure. The apparatus for sharing a collaboratively edited document may include: a command transferring server configured to receive two or more edition commands related to a collaboratively edited document from one or more clients included in a client group including two or more clients, and transmit the two or more edition commands to each of the clients included in the client group based on an order of the reception of the edition commands; and an engine-pool server configured to, when a predetermined condition is satisfied, update a seed document file related to the collaboratively edited document based on a command list collected based on the order of the reception of the received edition commands.