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