Bob Ponting: Digital Research Ready to Ship DR DOS 3.4. In: InfoWorld. Band11, Nr.9, 27. Februar 1989, S.23 (englisch, eingeschränkte Vorschau in der Google-Buchsuche): “The single-user single-tasking operating system, which is provided as an OEM product, has been licensed by 24 OEMs and corporate resellers for bundling with PC-compatibles since its introduction in May 1988, said Greg Ewald, a DRI spokesman. Most clients are Taiwanese clone makers, but more than half of their machines will be sold in the United States.”
Software Developer Caldera Sues Microsoft For Antitrust Practices Alleges Monopolistic Acts Shut Its DR DOS Operating System Out of Market. (Pressemitteilung) In: Caldera News. Caldera, 24. Juli 1996, abgerufen am 30. Mai 2024 (englisch): „As these demands escalated, the suit explains, ‘a number of OEMs approached DRI and requested that it develop a version of DOS that would fill the gaps in functionality that plagued MS-DOS. ... Accordingly, in 1987 DRI began planning for a new version of DOS, to be called DR DOS. The result of DRI's initial development effort was a product designated as DR DOS 3.31, introduced on May 28, 1988. DR DOS 3.31 was followed quickly by enhanced versions of the product. Thus DR DOS 5.0, introduced in May 1990, and DR DOS 6.0, introduced in September 1991, were significantly superior to then-existing versions MS-DOS in many areas.‘“
Mike Romano: The mouse that roared. Forget the feds. It’s up to an obscure Utah company to prove what we already know: that Microsoft is a monopoly. In: Seattle Weekly 16. September 1998, (seattleweekly.com)
Graham Lea: Win95 – is it just Dos 7 plus Windows 4 after all? In: The Register. 5. November 1999, abgerufen am 30. Mai 2024 (englisch): „an internal Microsoft strategy document dated 16 June 1992 admitted that Novell was its biggest threat: ‘Novell is after the desktop. As you know, they have acquired Digital Research and are now working hard to tightly integrate DR-DOS with NetWare. We should also assume they are working on a Windows clone and/or that they are working on a virtualised DOS environment which will run standard mode Windows as a client. This is perhaps our biggest threat.’“