Callidus Software Executives to Present at 2008 Wedbush Morgan Securities Management Access Conference

Market Wire, May, 2008

Callidus Software Inc. (NASDAQ: CALD), the leader in Sales Performance Management (SPM), today announced that Leslie Stretch, president and CEO, and Ron Fior, senior vice president and CFO, will present at the 6th Annual Wedbush Morgan Securities MAC: Management Access Conference for Micro-Small-Mid-Cap Companies. The conference will be held at Le Parker Meridien Hotel in New York, NY from May 21-22, 2008. Callidus Software is scheduled to present on Wednesday, May 21 from 11:15 a.m. - 11:55 a.m. EDT in the Gamshoge room.

Callidus Software's executives will be leading breakout sessions on May 21 from 8:00 a.m. - 11:10 a.m. EDT. Interested attendees may schedule one-on-one meetings directly through Wedbush Morgan Securities.

The presentation is intended to provide analysts and institutional investors with an overview of the company's business strategies and value proposition.

The presentation will be available via webcast at http://www.wsw.com/webcast/wedbush6/cald/ for approximately 30 days following the conclusion of the presentation.

About Callidus Software®

Callidus Software ( www.callidussoftware.com ) (NASDAQ: CALD) is the leading provider of on-premise and on-demand Sales Performance Management (SPM) solutions to global companies across a broad range of industries. Our software allows innovative enterprises of all sizes to strategically manage incentive compensation, set quota targets, administer producers, and align territories, resulting in improved sales and distribution performance. Over 1.8 million salespeople, brokers, and channel representatives have their sales performance managed by Callidus Software's products.

© 1998-2008 Callidus Software Inc. All rights reserved. Callidus Software, the Callidus Software logo, Callidus TrueAnalytics, TrueComp, TrueComp Grid, TrueComp Manager, TrueConnection, TrueFoundation, TrueInformation, TruePerformance, TruePerformance Index, TruePerformance Indicator, TrueMBO, TrueAllocation, TrueProducer, TrueQuota, TrueReferral, TrueResolution, and TrueService+ are trademarks, servicemarks, or registered trademarks of Callidus Software Inc. in the United States and other countries. All other brand, service or product names are trademarks or registered trademarks of their respective companies or owners.

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Investor Relations Contact: Ron Fior 408-808-6577 ir@callidussoftware.com Press Contact: Jock Breitwieser 408-975-6683 pr@callidussoftware.com