Company Recognized for Making Great Strides with Relational Navigation

El Segundo, Calif., March 12, 2007

Siderean, the leading provider of relational navigation solutions, today announced that it has been named to KMWorld magazine’s list of 100 Companies that Matter in Knowledge Management.

Siderean specializes in providing users with customized relational navigation solutions, enabling them to illuminate previously unseen relationships with its Seamark Navigator information access platform. Over the past year, Siderean has made significant progress expanding the footprint of its relational navigation solutions across a range of vertical markets, including media, high tech and government. The company has also secured a U.S. patent for its faceted metadata navigation technology.

Further validating the growing interest in Siderean’s Seamark Navigator, many high-profile organizations have recently started implementing the solution, including Oracle Corporation, the world’s largest enterprise software company; Snap-On Incorporated, a global manufacturer of tools and diagnostic equipment; Elsevier, the world’s largest publisher of scientific and technical research; Aelera, a leading provider of consulting, development and managed service solutions; Librarians’ Internet Index (LII.org), the highly-regarded information source for librarians; the US Department of Defense and NASA’s Jet Propulsion Laboratory.

“Being declared one of KMWorld’s 100 companies that matter in knowledge management is further testament to the important role that Siderean is playing in the evolving information access market,” said Michael Schmitt, CEO, Siderean Software. “Siderean is devoted to making the process of navigation a more personalized, intuitive experience for today’s knowledge workers, and we are thrilled to receive this kind of recognition.”

“If there is a single trait shared by the companies on our list, it is their determination to treat their entire constituency chain, from top to bottom, with respect and without hubris,” said Hugh McKellar, editor in chief of KMWorld. “Clearly, attitude alone doesn't warrant inclusion on the list, attitude must be accompanied by elegance in the design and implementation of their software.”

About KMWorld
The leading information provider serving the Knowledge, Document and Content Management systems market, KMWorld informs more than 50,000 subscribers about the components and processes - and subsequent success stories - that together offer solutions for improving business performance. KMWorld is a publishing unit of Information Today, Inc.

About Siderean Software
Siderean Software, Inc. enables organizations to navigate their digital universe. Siderean’s information access platform, Seamark Navigator, uses patented relational navigation technology to allow customers to keep pace with their exploding information access requirements. The next step in the evolution of information access, Siderean’s solutions break through traditional search technology limitations to deliver high-value, high-impact information to users in a personalized and intuitive way. Seamark provides users with a new way to aggregate and navigate through all their information to illuminate previously unseen relationships and create actionable context for information from across the enterprise and on the Web. Siderean enables Media, High Tech and Government organizations to effectively provision their information for unified discovery, access and participation. Founded in 2001, Siderean is backed by leading investment firms Clearstone Venture Partners, InnoCal Venture Capital and Red Rock Ventures. For more information about Siderean, please visit www.siderean.com.