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