VP-Expert

VP-Expert is an artificial intelligence development tool that gained popularity in the 1980s and 1990s. Published by Paperback Software, VP-Expert was designed to facilitate the creation of rule-based expert systems, primarily for applications in business and industry. VP-Expert was created by Brian Sawyer.

VP-Expert quickly gained market share in the expert system development tool sector, particularly in academic and small to medium-sized business environments. By 1990, it had become the best-selling expert system shell, with 120,000 copies sold worldwide and site licenses at DuPont, Kodak, and the Wharton School of Business.