Surge
                                A Swift library that uses the Accelerate framework to provide high-performance functions for matrix math, digital signal processing, and image manipulation.
                            
                        How to download and setup Surge
Open terminal and run command
                                            git clone https://github.com/Jounce/Surge.git
                                        
                                        git clone is used to create a copy or clone of Surge 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 Surge https://github.com/Jounce/Surge/archive/master.zip
Or simply clone Surge with SSH
                                            [email protected]:Jounce/Surge.git                                    
                                    If you have some problems with Surge
You may open issue on Surge support forum (system) here: https://github.com/Jounce/Surge/issuesSimilar to Surge repositories
Here you may see Surge alternatives and analogs
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