Calico Commerce Sets Standard for eBusiness.

Business Editors and Technology Writers

SAN JOSE, Calif.--(BUSINESS WIRE)--Aug. 22, 2000

Benchmark Testing Shows Java(tm)-Based Calico Advisor(TM) Provides

Industry-Leading Scalability and Performance for High-Traffic

e-Commerce Sites

Calico Commerce, Inc. (Nasdaq:CLIC), a leading provider of software that enables corporations to control eBusiness selling, today announced standard-setting scalability and performance benchmark results for Calico Advisor(TM), the company's configuration and recommendation application based on the Java(tm) 2 Platform, Enterprise Edition (J2EE(tm)).

The benchmark was audited by Applied Testing and Technology (ApTest), specialists in automated testing of application software, Web sites, middleware, operating systems, and compilers for companies such as BEA, Compaq, Hewlett Packard, Intel and Sun Microsystems. The benchmark demonstrated Advisor's capacity to power Web sites with more than one million users per day.

Calico Advisor Scales to Meet Customer Demand

Calico Advisor has been chosen by a variety of corporations including Best Buy, GE Capital, eFiltration, Inc., and Staples. "Calico Advisor's scalability and performance enabled us to go to market in 10 weeks so that we could provide our customers with a powerful solution for customizing, selling and trading complex filtration products and services via the Web," said Brandon Ost, CEO and co-founder of eFiltration, Inc., the first global commerce hub for filtration products, services and knowledge. "Calico's standards-based architecture enabled us to rapidly deploy our Net market to meet the demands of our multiple customers. As a result, we are now able to increase revenues, reduce costs and foster loyalty among our buyers and suppliers, which is critical to our business." eFiltration, Inc. (www.efiltration.com) deployed Calico Advisor because the company required a scalable and flexible solution that would provide its distributors, manufacturers and end users with custom, context-specific information such as product and service features, discounts and competitor offerings, so that they are equipped to make informed buying decisions online.

"By developing and executing a comprehensive performance benchmarking protocol, Calico is providing customers with a valuable tool in selecting configuration software," said Mike McHugh, vice president of BEA E-Commerce Server product management. "BEA and Calico are working together closely to deliver the fastest, most scalable e-Commerce solutions to a large base of customers worldwide. Today's benchmark results demonstrate Calico Advisor's ability to deliver a highly responsive Web-based buying experience, even under the most demanding peak-load conditions."

Calico Advisor is a next-generation configuration and recommendation application designed for very large-scale e-Commerce sites. Calico Advisor enables companies to offer their customers a guided buying experience and the ability to make complex purchases via the Internet. At the core of Calico Advisor is a multi-threaded stateless engine -- the industry's first configuration engine to have completed audited performance testing. Calico Advisor, like all the products in the Calico suite of eBusiness applications, is written to the Java 2 Platform, Enterprise Edition specifications, and runs on Calico's standards-based Lightning Architecture.

"Calico has made a commitment to industry standards, illustrated by its ability to deliver highly scalable standards-based e-Commerce applications using Java technology and running on the Java 2, Enterprise Edition platform," said Shahram Moradpour, director, E-Commerce Market Development at Sun Microsystems, Inc. "We're pleased that Calico was able achieve this higher level of performance on the benchmark using the power and scalability inherent in the Sun platform."

"Today's benchmark results demonstrate a breakthrough in performance and scalability in configuration software," said David Cardinal, chief technology officer, Calico Commerce, Inc. "By building our technology on industry standards, basing our entire product suite on an open application server and demonstrating the highest levels of performance, Calico continues to help corporations successfully sell products and services in Net markets, direct over the Web and through their existing channels."

Benchmark Findings

On two clustered application servers, Calico Advisor returned an optimal throughput of 66.3 CPS, with an average response time of .1 seconds. Given typical e-Commerce website user behavior, Advisor's benchmarked performance translates to the capacity of handling more than a million visitors a day.

Calico Advisor's performance was benchmarked using Mercury Interactive's LoadRunner(R) load-generation software. The benchmark was performed on commercially available hardware running Intel microprocessors and Microsoft Windows NT 4.0, and was supervised by ApTest under rigorous testing conditions. "Calico's focus on performance and the high level of integrity of their test process is evidence of their leadership in the industry," said Andrew Silverman, CEO of ApTest.

The complete Calico Advisor benchmark report is available immediately at www.calico.com/results or by calling 800/4-CALICO.

About ApTest

Applied Testing and Technology was founded in 1993 to serve the growing market for software testing. ApTest's founders were the key managers of the 88open Consortium, an industry coalition focused on application interoperability testing. Today ApTest is an industry leader in software testing, specializing in manual and automated testing of Web sites, applications, middleware, and system software and the operation of certification and branding programs. ApTest's client list includes Ameritrade, Motorola, IBM, and Intel. ApTest's audit of the Calico Advisor performance benchmarking effort ensured Calico's methodology and procedures were accurate

and that the test results are valid.

About Calico Commerce, Inc.

Calico Commerce, Inc. provides software that enables corporations to control the key elements of eBusiness when selling in Net markets, direct over the Web or through existing channels. Calico's 100% Pure Java(tm), application server-based eBusiness application suite meets the performance, reliability and scalability needs of any business while allowing customers to handle complex products, pricing and relationships via the Web through the entire customer life cycle. As a result, organizations are able to drive revenue growth, increase customer satisfaction and achieve competitive advantage. Calico customers include leaders in high-technology hardware, manufacturing, telecommunications services, financial services, home furnishings, chemicals, agriculture and retail. Calico Commerce, Inc., headquartered in San Jose, Calif., can be found on the World Wide Web at www.calico.com.

Except for the historical information contained herein, some of the matters discussed in this news release contain forward-looking statements that involve substantial risks and uncertainties. The following factors, among others, could cause the Company's actual results to differ materially from those described in these forward-looking statements: demand for the Company's products, the level of service and price competition, the ability of the Company to develop and market new and existing products, ongoing introduction of new and enhanced products by competitors, the concentration of revenues in the last weeks of a given quarter and those other factors described in the Company's Registration Statement on Form S-1 and other public reports filed with the Securities and Exchange Commission.

Note to Editors: Calico is a registered trademark of Calico Commerce, Inc.

Sun, Sun Microsystems, the Sun Logo, 100% Pure Java, Java and J2EE are trademarks or registered trademarks of Sun Microsystems, Inc. in the United States and other countries.