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