Moreover, in the years to come, PC-based word processing products like WordStar, and then WordPerfect, would become far more popular than Microsoft’s own first word processing (originally called Multitool Word), providing low-cost alternatives to the proprietary minicomputer based software offerings of vendors like Wang Laboratories. IBM, too, provided a word processing program for the PC called DisplayWriter. That software was based on a similar program that IBM had developed for its mainframe systems customers. More importantly, another program was launched at just the right time to dramatically accelerate the sale of IBM PCs and their clones. That product was the legendary “killer app” of the IBM PC clone market: Lotus 1-2-3, the spreadsheet software upon which Mitch Kapor built the fortunes of his Lotus Development Corporation.
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