The main features of codexus/unity-pixelshader are: Post Processing Effects.
Open-source alternatives to codexus/unity-pixelshader include: andrewgotow/heatwave. cyario/imageeffectlab. danielshervheim/image-effects-for-unity. danielshervheim/retro-image-effects. danielzeller/lightleaksunity. aaaleee/unityscanlineseffect.