Pixelorama and Material Maker are two very different programs that have an exceptional amount in common. One direct commonality is, they both received updates this week. In addition to new updates, Material Maker and Pixelorama are both open source game development related applications released under the MIT license and created using the Godot game engine.
Material Maker is a graph or node based procedural texture generation tool, perhaps the closest thing that exists to a free and open source Substance Designer alternative. Material Maker just released version 0.93 with new features including several new nodes and node improvements, support for custom meshes, an all new dynamic reference panel and more. The source code for Material Maker is available here.
Pixelorama is a pixel based art application with animation support. Pixelorama just released version 0.8.1 adding new tools for moving animation frames, a new purple theme, sprite generation improvements and more. The source code for Pixelorama is available here.