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In 1966 the company developed "RUSH" (Remote Users of Shared Hardware), an interactive dialect of PL/I. Between 1965 and 1966 they developed CPS (Conversational Programming System), a timesharing system that ran under OS/360, under contract to IBM.
In 1969 Allen-Babcock held a 3 percent share of the time-sharing services market.
- Hardy, Norman (2004), Tymshare History, retrieved 2008-07-29
- Lehmann Brothers, "Allen-Babcock Computing, Inc.", Lehman Brothers Collection-Twentieth Century Business Archives, retrieved 2008-07-29
- Rochester, Nathaniel (1966), Conversational Programming System Progress Report (PDF), retrieved 2008-07-29
- Rosin, Robert (1969), "PL/I Implementation Survey", PL/I Bulletin (7): 35–42