A method synchronizes data between a first computer and a second computer. An original first data in a first computer is changed into revised first data in the first computer by inserting a data change into the original first data. The data change in the revised first data is identified and transmitted to a second computer in a message. The message instructs the second computer to convert an original second data stored in the second computer into a revised second data by inserting the data change into the original second data, where the original second data and the revised second data are used and managed by a resident application software on the second computer. The message is executable without use of the resident application software on the second computer, thus allowing changes to be made across disparate platforms.