Siebel Systems
On-premises customer relationship management software application company acquired by Oracle
Siebel Systems, Inc. () was an American software company principally engaged in the design, development, marketing, and support of customer relationship management (CRM) applications—notably Siebel CRM.
The company was founded by Thomas Siebel and Patricia House in 1993. At first known mainly for its sales force automation products, the company expanded into the broader CRM market. By the late 1990s, Siebel Systems was the dominant CRM vendor, peaking at 45% market share in 2002.
On September 12, 2005, Oracle Corporation announced it had agreed to buy Siebel Systems for $5.8 billion. "Siebel" is now a brand name owned by Oracle Corporation.
Siebel Systems is Oracle's on-premises CRM system, and Oracle's cloud applications for CRM are Oracle Advertising and Customer Experience (CX).
History
Siebel Systems, Inc. began with sales force automation software, then expanded into marketing and customer service applications, including CRM. From the time it was founded in 1993, the company grew quickly.
Benefiting from the explosive growth of the CRM market in the late 1990s, Siebel Systems was named the fastest growing company in the United States in 1999 by Fortune magazine.
The public source identifies “Siebel Systems” as on-premises customer relationship management software application company acquired by Oracle. This brief keeps that definition visible, then builds a research path around Siebel, Systems and On-premises.
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Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Sep 17, 2026. The linked authority identifier is Q2143512. VIAF identifies the subject as 146768195. The Library of Congress control number is n99276117. 2 of 4 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1993, 2002, 2005 and 1999.
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This entry incorporates text from “Siebel Systems” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.