Developers of open-source Samba software will find their work a little easier thanks to an agreement with Microsoft, signed Thursday, that will give them access to previously secret data on how the Windows operating system works.

Microsoft was compelled to make this information available following a March 24, 2004, European Commission antitrust ruling against the company. In July 2006, the EU fined Microsoft €280.5 million (US$338.6 million at that time) for failing to provide documentation on Windows protocols to its rivals. Microsoft lost an appeal of that decision in September, setting the stage for the deal.

The deal was signed with a nonprofit group called the Protocol Freedom Information Foundation, (PFIF) which negotiated on behalf of the Samba team because Samba is not represented by a corporate entity. PFIF will pay a one-time fee of €10,000 and, in return, will be able to allow open-source developers, including the Samba team, to access the documents.

Developers will have to sign nondisclosure agreements and will not be allowed to redistribute Microsoft's documentation, but they will be able to write open-source software that implements the Windows protocols.

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