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