How to download and setup OpentK3D
Open terminal and run command
                                            git clone https://github.com/Frederoche/OpentK3D.git
                                        
                                        git clone is used to create a copy or clone of OpentK3D 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 OpentK3D https://github.com/Frederoche/OpentK3D/archive/master.zip
Or simply clone OpentK3D with SSH
                                            [email protected]:Frederoche/OpentK3D.git                                    
                                    If you have some problems with OpentK3D
You may open issue on OpentK3D support forum (system) here: https://github.com/Frederoche/OpentK3D/issuesSimilar to OpentK3D repositories
Here you may see OpentK3D alternatives and analogs
gpu.js pixijs HTML-GL yasea js Blotter StarWars.Android gl-react glsl-optimizer glslViewer Wagner THREE.MeshLine fieldplay RenderPipeline PixelFlow polygon-shredder shaderc ShaderEditorExtension regl-cnn vulkan_minimal_compute hlsl2glslfork ShaderSketches wireframe-world webclgl curtainsjs ShaderEditor Bonzomatic ouzel gl-transitions Partikel_accelleration_on_GPU