How to download and setup orocommerce
Open terminal and run command
                                            git clone https://github.com/oroinc/orocommerce.git
                                        
                                        git clone is used to create a copy or clone of orocommerce repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with orocommerce https://github.com/oroinc/orocommerce/archive/master.zip
Or simply clone orocommerce with SSH
                                            [email protected]:oroinc/orocommerce.git                                    
                                    If you have some problems with orocommerce
You may open issue on orocommerce support forum (system) here: https://github.com/oroinc/orocommerce/issuesSimilar to orocommerce repositories
Here you may see orocommerce alternatives and analogs
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