May 16, 2005
FOR IMMEDIATE RELEASE

Visual Numerics^® Honored by SD Times 100

IMSL® C# Numerical Library for .NET Wins Components & Libraries Category

SAN RAMON, Calif. - May 16, 2005 - Visual Numerics, Inc., a leading provider of numerical analysis and visualization software, today announced that it was chosen for the third consecutive year by SD Times magazine for their 3rd Annual SD Times 100 awards. This award, which was announced on May 15, 2005 and posted online at http://www.sdtimes.com, recognizes the leaders and innovators of the software development industry. Visual Numerics won the Components & Libraries category for its outstanding achievement with its ground-breaking offering of the IMSL C# Numerical Libraries for .NET applications.

"We are delighted to be named the winner of Components & Libraries by SD Times for the third consecutive year in such a competitive field," said Phil Fraher, president and CEO of Visual Numerics. "Achieving this industry distinction, especially for the newest version of our IMSL Numerical Libraries, is a tribute to our ongoing commitment to develop the most innovative and advanced analytic solutions, giving our business, technical and scientific audiences the ability to easily perform sophisticated data analysis."

The IMSL C# Numerical Library is the only mathematical and statistical library written in 100% Microsoft Visual C# .NET that offers complete compatibility and scalability with the Microsoft .NET Framework. With the IMSL C# Library, developers using Microsoft Visual Studio .NET can create advanced business analytics applications to help organizations gain valuable insight into data, including previously undetected trends and relationships. Based on more than three decades of Visual Numerics' technical computing and algorithm development expertise, the highly reliable mathematical and statistical algorithms found in the IMSL C# Library deliver a level of analysis to Microsoft Visual C# .NET and Visual Basic .NET developers previously found only in high-performance computing environments.

"The software development industry is led by innovation," said Alan Zeichick, Editor-in-Chief of BZ Media's SD Times. "When choosing the 2005 SD Times 100, we carefully considered each organization's products and services, reputation with development managers, and the new ideas and thought leadership that it has brought to the industry. Thanks to the SD Times 100 winners, the art of software development continues to advance at a rapid pace."

About Visual Numerics

Visual Numerics has provided technical software solutions for numerical analysis and visualization for more than three decades. The company's software products help users understand complex data from a variety of sources and build business-critical applications. Visual Numerics offers two product lines: the IMSL Numerical Libraries for powerful mathematical and statistical analysis and the PV-WAVE® visual data analysis development environment. Visual Numerics also offers customized consulting services for applications that involve mathematical, statistical, or visual data analysis to meet today's business analytical needs.

Major corporations, academic institutions, and research laboratories worldwide use Visual Numerics' software tools, including such high profile companies as: Bear, Stearns & Company; Barclays Global Investors; Priceline.com; The Dow Chemical Company; Humana; Sandia National Laboratories; and Boeing Company. This large and diverse customer base is supported through a direct sales force, wholly owned international subsidiaries, and international distributors. For more information about Visual Numerics, please visit www.visualnumerics.com.

About SD Times

BZ Media LLC (http://www.bzmedia.com) is a New York-based media company combining the best of print and Internet publishing with industry-leading technical conferences and expositions. BZ Media's SD Times (www.sdtimes.com) is the twice-monthly newspaper of record for the software development industry. SD Times reaches more than 55,000 subscribers in 131 countries.

Trademark Statement:

Visual Numerics and PV-WAVE are registered trademarks of Visual Numerics, Inc. in the U.S. and other countries. IMSL, JMSL, JWAVE, TS-WAVE and Knowledge in Motion are trademarks of Visual Numerics, Inc. All other company, product or brand names are the property of their respective owners.