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The software, called Xiant Filer, integrates with Outlook and tracks the way users file e-mail messages. It recommends filing options based on the user's filing habits.
The company said Xiant Filer also simplifies mailbox management by enabling filing across multiple e-mails through its file by sender, file by thread, and file by topic features.
Xiant is one of Paul Allen's few forays into software since leaving Microsoft in 1983 to start his own business and philanthropic foundation. Allen was largely regarded as the brains behind Microsoft when he joined Bill Gates to develop a version of the programming language BASIC for the first microcomputer, the MITS Altair.
A beta version of Xiant Filer is now available on a 60-day trial.