How to download and setup postprocessing
Open terminal and run command
                                            git clone https://github.com/pmndrs/postprocessing.git
                                        
                                        git clone is used to create a copy or clone of postprocessing 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 postprocessing https://github.com/pmndrs/postprocessing/archive/master.zip
Or simply clone postprocessing with SSH
                                            [email protected]:pmndrs/postprocessing.git                                    
                                    If you have some problems with postprocessing
You may open issue on postprocessing support forum (system) here: https://github.com/pmndrs/postprocessing/issuesSimilar to postprocessing repositories
Here you may see postprocessing alternatives and analogs
three.js smartcrop.js aframe netdata plotly.js plotly.py spritejs gpu.js tfjs openpose filepond tfjs-core PhotoEditor xterm.js SlicerGitSVNArchive plotly.R PyCNN opencv sharp caire cropper glide-transformations Pillow cropperjs darkflow Blurry framework NYXImagesKit Crunch Halide