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Microsoft has long maintained that its code is its most valuable intellectual property, often dubbed the "crown jewels," and has thus aggressively restricted access to that code. But other software companies, such as Sun Microsystems Inc., of Santa Clara, Calif., are less worried about sharing their source code with customers, developers and academic institutions.
Programmer Riley said he believes that, among software vendors, IBM probably does the best job of keeping its source code secure while still letting those who need to see it do so.
John Fowler, Suns chief technology officer for software, said Sun is much less protective of its Solaris and Java source code. Sun is also meeting with those parties who are pushing for an open-source implementation of Java.
"We take a far more laid-back approach," Fowler said. "We license the source code fairly liberally and quite widely. Solaris source code is licensed to hundreds of academic institutions for $100; we also have 50 commercial licensees. We are in general happy for people to look at the source and tell us what we ought to be changingdevelopers, partners and academic institutionsand allow them to download the actual code, which they can change as long as this is for noncommercial reasons," he said.
Fowler said Sun is fundamentally different from Microsoft with regard to its source code. "Preventing access to my source is not central to my business model," he said. "Preventing access to source is central to their business model, as is trying to avoid having people have compatible implementations of protocols, data formats and other things."
But Microsofts Matusow disputes that claim, saying Fowler is muddling some ideas relative to standards and the role that standards play for things like communication protocols.
"He is ignoring the fact that we have published, under the Consent Decree, more than 280 application programming interfaces but also made available for licensing the communication protocols for both client and server," Matusow said. "Aside from those issues, he is correct that if you release all of your source code, then you do have an impact on competitive differentiation."
Its hard to argue that Microsoft has not enabled an ecosystem around Windows, which supports some 75,000 applications, Matusow said, adding that Microsoft also won the Best in Show award at LinuxWorld in 2003 for interoperability with its Services for Unix product.
"[Fowler] may very well be giving away more of the source," Matusow said. "But I cant comment on the effect of that on Suns business model except to say that you can judge that for yourself."
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