How to download and setup mapper
Open terminal and run command
                                            git clone https://github.com/OpenOrienteering/mapper.git
                                        
                                        git clone is used to create a copy or clone of mapper 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 mapper https://github.com/OpenOrienteering/mapper/archive/master.zip
Or simply clone mapper with SSH
                                            [email protected]:OpenOrienteering/mapper.git                                    
                                    If you have some problems with mapper
You may open issue on mapper support forum (system) here: https://github.com/OpenOrienteering/mapper/issuesSimilar to mapper repositories
Here you may see mapper alternatives and analogs
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