Ed Esber and Apple Computer chairman John Sculley jointly announced Ashton Tate's family of Mac products in Palo Alto, California. dBASE Mac finally shipped in September 1987, but it was dBASE in name only. Users were dismayed to learn that in order to interact with their major investment in dBASE on the PC, their applications would have to be re-written from scratch. Adding to their frustration was the fact that it crashed frequently and was extremely slow. Given that the program was really a completely new Mac-only system, it had to compete with other Mac-only database systems like 4th Dimension, Helix and FileMaker.