[1] As a PC industry veteran, he pioneered the marketing and distribution of personal computer productivity software.
He served on the boards of companies that introduced the first hard disk add on card for PCs, the first MP3 player, the first DVR and the first tablet computer.
In 1979, Dan Flystra recruited Esber to run worldwide sales and marketing for Personal Software (later renamed VisiCorp).
While at Ashton-Tate, Esber had several strategic merger discussions with the likes of Lotus and Microsoft which were all rejected by the board.
Esber currently sits on the boards of PanTerra Networks and is co-chair of the emeriti trustee committee of Case Western Reserve University.