What is the difference between Selenium and QTP

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Selenium                                                                                          QTP

Open source                                                                           Commercial

Works on all OS                                                             Works on Windows only

Tests only Web applications                                             Tests web and desktop
                                                                                        applications

Code can be converted to any one of languages such as                   Uses VB script
Java, C#, Ruby, Python, pearl, php etc
                                                                                                  
No object repository                                                      Has got an object repository

IDE sometimes does not record some fields                     Recording is a little reliable
                                                                                       events