How to download and setup gfx
Open terminal and run command
                                            git clone https://github.com/gloggers99/gfx.git
                                        
                                        git clone is used to create a copy or clone of gfx 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 gfx https://github.com/gloggers99/gfx/archive/master.zip
Or simply clone gfx with SSH
                                            [email protected]:gloggers99/gfx.git                                    
                                    If you have some problems with gfx
You may open issue on gfx support forum (system) here: https://github.com/gloggers99/gfx/issuesSimilar to gfx repositories
Here you may see gfx alternatives and analogs
spritejs tinyrenderer appleseed yii2-render-many tangram pixijs bgfx Texture rendertron webglstudio.js mapnik asm-dom rust-doom react-tv gg herebedragons Glitter phenomenon ScriptableRenderPipeline Nidium Intrinsic armory PdfViewPager ShaderGraph ogre two WickedEngine Game-Programmer-Study-Notes glumpy ascii_art