Exhibit 21.1

SIEBEL SYSTEMS, INC.
                                  SUBSIDIARIES



|Subsidiary                                        | Country or State of Incorporation
|------------------------------------------------- | ---------------------------------
|Domestic                                          |                                  
|Siebel America Fund, Inc.                         | California                       
|Siebel Scholars Foundation                        | California                       
|MOHR Development, Inc.                            | Connecticut                      
|InterActive WorkPlace, Inc.                       | Delaware                         
|Jaguar Delaware Sub, Inc.                         | Delaware                         
|Janna Systems (US) Inc.                           | Delaware                         
|nQuire Software, Inc.                             | Delaware                         
|OnLink Technologies, LLC                          | Delaware                         
|OpenSite Technologies, LLC                        | Delaware                         
|Paragren Technologies, Inc.                       | Delaware                         
|Sales.com, Inc.                                   | Delaware                         
|Scopus Technology, LLC                            | Delaware                         
|Siebel Helpline.com, Inc.                         | Delaware                         
|Siebel Systems Holdings, LLC                      | Delaware                         
|Siebel Systems International LLC                  | Delaware                         
|Siebel Systems International LP                   | Delaware                         
|SiebelNet, Inc.                                   | Delaware                         
|OnTarget (US) Inc.                                | Georgia                          
|OnTarget, LLC                                     | Georgia                          
|Trillium Research, Inc.                           | Georgia                          
|RogersGrant Acquisition Corp.                     | Massachusetts                    
|Nomadic Systems, Inc.                             | New Jersey                       
|The 20-20 Group, Ltd.                             | Ohio                             
|The Sales Consultancy, Inc.                       | Texas                            
|International                                     |                                  
|Siebel Systems Argentina S.R.L.                   | Argentina                        
|Siebel Systems Australia Pty Ltd.                 | Australia                        
|Siebel Systems Osterreich GmbH                    | Austria                          
|Siebel Systems Belgium SPRL                       | Belgium                          
|Siebel Systems Brasil Ltda                        | Brazil                           
|Siebel Janna Arrangement, Inc.                    | Canada                           
|Siebel Systems Canada, Limited.                   | Canada                           
|Comercial Siebel Systems Chile Limitada           | Chile                            
|Siebel Systems Hong Kong Ltd.                     | China                            
|Siebel Systems Colombia Ltda                      | Columbia                         
|Siebel Systems Danmark ApS                        | Denmark                          
|Siebel Systems Suomi Oy                           | Finland                          
|Siebel Systems France SAS                         | France                           
|Siebel Systems Deutschland GmbH                   | Germany                          
|Siebel Systems Magyarorszäg Kft                   | Hungary                          
|Siebel Systems EMEA Limited                       | Ireland                          
|Siebel Systems Ireland Holdings, Limited          | Ireland                          
|Siebel Systems Isle of Man, Limited               | Isle of Man                      
|Siebel Systems Israel Software Ltd.               | Israel                           
|Siebel Systems Italia Consulting S.r.l.           | Italy                            
|Siebel Systems Italia S.r.l.                      | Italy                            
|Siebel Systems Japan K.K.                         | Japan                            
|Siebel Systems (Jersey) Limited                   | Jersey                           
|Siebel Systems Malaysia Sdn.Bhd.                  | Malaysia                         
|Siebel Systems de Mexico S de R.L. de C.V.        | Mexico                           
|Siebel Systems Australia Pty Ltd.                 | New Zealand                      
|Siebel Systems Norge A.S.                         | Norway                           
|Janna Nova Scotia Sub Company                     | Nova Scotia                      
|Siebel Systems Siebel Systems Polska Sp. z o.o    | Poland                           
|Siebel Systems Portugal Solucoes De Informacao    | Portugual                        
|Siebel Systems Singapore Pte Ltd.                 | Singapore                        
|Siebel Systems South Africa (Proprietary) Limited | South Africa                     
|Siebel Systems Korea Limited                      | South Korea                      
|Siebel Systems Espana S.L.                        | Spain                            
|Siebel Systems Sverige AB                         | Sweden                           
|OnTarget, S.A.                                    | Switzerland                      
|Siebel Systems Schweiz GmbH                       | Switzerland                      
|Siebel Systems Ceska Republika s.r.o.             | The Czech Republic               
|Do-Holding B.V.                                   | The Netherlands                  
|Do-Opleidingstechnologie B.V.                     | The Netherlands                  
|Siebel Systems Benelux B.V.                       | The Netherlands                  
|Siebel Systems Yazilimi Hizmelteri Sirketi        | Turkey                           
|OnLink Europe Ltd.                                | United Kingdom                   
|OpenSite Europe Limited                           | United Kingdom                   
|OnTarget UK Ltd.                                  | United Kingdom                   
|Siebel Systems UK Ltd.                            | United Kingdom                   
|Corporate Training Systems Limited                | United Kingdom & Wales           

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