G lendale, Calif., December 15, 1997 ­ Windows NT network utilities leader Executive Software, provider of the defragmentation technology in Windows NT 5.0, and CyberSource Corp., the global leader in digital commerce services, have teamed up to make the award-winning Diskeeper defragmenter available for immediate purchase and download over the Internet from This partnership joins the leaders in network utilities and digital commerce services to provide system administrators with easy access to disk fragmentation solutions.

^" D iskeeper is one of the least expensive ways for system administrators to increase Windows NT system performance," said George Goodrich, Diskeeper Product Manager. "Now they're able to purchase, download, install the software and be up and running within minutes."

^" E lectronic Software Distribution provides companies like Executive Software with a reliable way to conduct business via the Internet," said Bill McKiernan, president and CEO of CyberSource. "They can focus on what they do best, software development and publishing, while we handle all the backoffice Internet Commerce Services ranging from real-time credit card and order processing to electronic fulfillment."

D isk fragmentation is a feature that breaks up files and scatters them into pieces around the disk. While this speeds the storage of files, it results in slower file access times. Diskeeper eliminates fragmentation, restoring the full speed and performance of the system. With Diskeeper, software loading times and database search times can be cut in half. Performance is increased for Internet servers, e-mail servers, graphics and financial applications. Multimedia and video applications are kept smooth and synchronized.

^" I 'm very pleased with Diskeeper," said Dave Phelps of Lanier Worldwide, Inc. "One application that I run reads and writes a large number of files ranging in size from 100 bytes to 64,000 bytes. After running Diskeeper, the throughput measured is consistently doubled. In addition, some programs loaded significantly faster after defragmenting the disk."

About Diskeeper

D iskeeper is the first Windows NT defragmenter with network controls that allow administrators to schedule, monitor and launch defragmentation across a network. These features save network administrators from having to run around to each desktop to defragment disks or grant administrative privileges to users. The new Diskeeper 3.0 with its exclusive directory consolidation feature shipped last month. Diskeeper 3.0 is now available in several versions for immediate download from .

E lectronic Software Distribution of Diskeeper is limited to U.S. and Canadian customers. Purchases can be made on-line with VISA or Mastercard. Electronic software distribution prices are $49.95 for the Windows NT Workstation version and $259.95 for Windows NT Server. Available platforms include Intel and Alpha. Electronic software distribution prices for Diskeeper 2.0 customers upgrading to version 3.0 are $29.95 for Workstation and $124.95 for Server.

About Executive Software

F or over a decade, Executive Software's Diskeeper products have set the standard in network defragmentation and increased system performance for enterprise-class systems. Diskeeper for Windows NT is the only network-ready defragmenter available for Windows NT. In fact, the Microsoft Press book "Running Microsoft Windows NT Server 4.0," describes Diskeeper as "The most commonly used disk defragmentation program for Windows NT."

F ounded in 1981, Executive Software is the world leader in defragmentation software for Windows NT and OpenVMS computer systems. Its products have increased system performance in enterprise-class networks for the last twelve years, beginning with the release of Diskeeper for Digital Equipment Corp's VMS operating system, an enterprise system with which Windows NT has shared development roots.

D iskeeper is featured on the Windows Magazine 1997 Recommended List and Win 100 list and is winner of the "Best of LAN Times" magazine award. Executive Software recently announced that Microsoft Corporation will be including a manual version of Diskeeper in the Windows NT 5.0 operating system. Diskeeper is certified as Microsoft BackOffice compatible and it speeds performance for the entire family of Microsoft BackOffice server products.

E xecutive Software is located at 701 N. Brand Blvd., Glendale, CA 91203. Phone numbers are and . Diskeeper 3.0 is compatible with Windows NT 4.0. A Diskeeper version is also available for Windows NT 3.51. Free utilities such as Diskeeper Lite for Windows NT 4.0 and the Fragmentation Analysis Utility can be downloaded from the products section.

About CyberSource's Services

C yberSource Corporation provides the full range of essential commerce services to conduct secure, electronic distribution of software and other digital products via the Internet. CyberSource's advanced, global services include credit card processing in 21 currencies, fraud screening, sales tax/VAT calculation, export control, territory management, secure digital goods distribution, a trusted Rights Registry, and EDI links for physical goods fulfillment. By outsourcing Internet commerce services to CyberSource, customers reduce their time-to-market and can focus their efforts on marketing their sites and products, while avoiding the backoffice infrastructure and complexities required for digital commerce.

About CyberSource Corporation

C yberSource Corporation is a global provider of Internet transaction processing and electronic fulfillment services. More than 180 major software publishers, distributors and resellers have turned to CyberSource for its portfolio of commerce services which are optimized for digital product distribution, as well as for Cybersource's rapid-start program which enables merchants to process transactions online in as little as a week. CyberSource's customers include Adobe, AutoDesk, Borland, Egghead, IBM/Lotus, Microsoft, Netscape, Programmer's Paradise, Reader's Digest, Tandem, and Wall Data. Founded in 1994, CyberSource is a privately held company headquartered in San Jose, California and maintains offices in the United States and Europe.

F or more information visit http://www.cybersource.com or email to