Systems and methods are disclosed herein for an operational transformation proxy for a thin client. The systems and methods may be used for collaboratively editing an electronic object such as an electronic document from a thin client. A first request is received at an OT proxy from the thin client to make a first change to a first version of the electronic object. A first mutation, including the first change to the first version of the electronic document, is created. A second mutation is received at the OT proxy from the server. At the OT proxy, the second mutation of the electronic object is converted into a third mutation of the electronic object based on the first mutation.