Ranked in these QuestionsQuestion Ranking
Pro Free as in Freedom
Open-source and completely free to use.
Pro Full GPU Acceleration
All the nodes are actually shaders, so Material Maker works as fast as your GPU. For complex operations like blurring a buffer is used, but you can add a buffer node yourself to further optimize the texture generation.
Pro One-click PBR material export to pupular game engines
Material Maker allows exporting materials ready to use in Unreal, Unity, Unity HDRP and Godot instantly.
Pro Powerful Nodes
Material Maker has a lot of interesting nodes that together allow artists to create amazing materials. You'll find many nodes similar to what Substance Designer offers.
Con UI needs work
Using the node editor with a very complex graph gets difficult - using node groups is recommended to mitigate this problem.