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EXHIBIT 21

SUBSIDIARIES OF MANUGISTICS GROUP, INC.

Listed below are the significant subsidiaries of the Company as of February 28,
2003 and their jurisdictions of organization. All of these subsidiaries are
wholly owned by the Company.

|                                                |  |                   |  |                                                 |  |  |  | 
|----------------------------------------------- |  | ----------------- |  | ----------------------------------------------- |  |  |  | 
|                                                |  | State or          |  |                                                 |  |  |  | 
|                                                |  | Jurisdiction      |  |                                                 |  |  |  | 
|                                                |  | of Incorporation  |  | Name Under Which                                |  |  |  | 
|Name                                            |  | or Organization   |  | Subsidiary Does Business                        |  |  |  | 
|                                                |  |                   |  |                                                 |  |  |  | 
|Manugistics, Inc.                               |  | Delaware          |  | Manugistics, Inc.                              
|Manugistics France S.S.A.                       |  | France            |  | Manugistics France S.A.                        
|Manugistics U.K. Ltd.                           |  | United Kingdom    |  | Manugistics U.K. Ltd.                          
|Manugistics Canada Company                      |  | Nova Scotia       |  | Manugistics Canada Company                     
|Manugistics (Deutschland) GmbH                  |  | Germany           |  | Manugistics (Deutschland) GmbH                 
|Manugistics European Holding                    |  |                   |  | Manugistics European Holding                   
|Company B.V                                     |  | Netherlands       |  | Company B.V.                                   
|Manugistics Services, Inc.                      |  | Delaware          |  | Manugistics, Inc.                              
|Manugistics Japan K.K                           |  | Japan             |  | Manugistics Japan K.K.                         
|Manugistics do Brasil Limtada                   |  | Brazil            |  | Manugistics do Brasil Limtada                  
|Manugistics Singapore PTE LTD                   |  | Singapore         |  | Manugistics Singapore PTE LTD                  
|Manugistics Australia Pty LTD                   |  | Australia         |  | Manugistics Australia Pty LTD                  
|Manugistics Holdings Delaware, Inc.             |  | Delaware          |  | Manugistics Holdings Delaware, Inc.            
|Manugistics Holdings Delaware II, Inc.          |  | Delaware          |  | Manugistics Holdings Delaware, Inc.            
|Manugistics, N.V.S.A.                           |  | Belgium           |  | Manugistics, N.V.S.A.                          
|Manugistics Services Mexico, S. de R.L. de C.V. |  | Mexico            |  | Manugistics Services Mexico, S. de R.L. de C.V.
|Manugistics Mexico, S. de R.L. de C.V.          |  | Mexico            |  | Manugistics Mexico, S. de R.L. de C.V.         
|Manu Transportation LLC                         |  | Delaware          |  | Manu Transportation LLC                        
|Manugistics Nordic AB                           |  | Sweden            |  | Manugistics Nordic AB                          
|Manugistics Atlanta, Inc.                       |  | Georgia           |  | Manugistics Atlanta, Inc.                      
|Manugistics Euro, Ltd.                          |  | United Kingdom    |  | Manugistics Euro, Ltd.                         
|Manugistics Malaysia Sdn. Bhd                   |  | Malaysia          |  | Manugistics Malaysia Sdn. Bhd.                 
|Manugistics Hong Kong Limited                   |  | Hong Kong         |  | Manugistics Hong Kong Limited                  
|Manugistics Consulting Services Shanghai Co.    |  | The Peoples      |  | Manugistics Consulting Services Shanghai Co.   
|Limited                                         |  | Republic of China |  | Limited                                        
|STG Holdings, Inc.                              |  | Delaware          |  | STG Holdings, Inc.                             
|STG Pacific (Pty) Limited                       |  | Australia         |  | STG Pacific Pty. Limited                       
|Scheduling Technology Group, Inc.               |  | Texas             |  | Scheduling Technology Group, Inc.              
|Scheduling Technology Group Limited             |  | United Kingdom    |  | Scheduling Technology Group Limited            
|Western Data Systems Intl., Ltd. UK            |  | United Kingdom    |  | Western Data Systems Intl., Ltd. UK