I think TypeScript is the next logical step for CSS tools. vanilla-extract allows you to write zero-runtime stylesheets in TypeScript. Brought to you by the same team that created Capsize.
A collection of XState state machine configs that can be copied / pasted into your projects.
A tool for exploring GIT commands based on a 'I want to...' interface.
Ink, an open-source markup language for developing text-based games. Developed by inkle studios.
A simple animated sprite editor & pixel art tool. I used this to create some of the icons & animations for Pixel Thief. A focus on basic functionality makes it easy to learn.
A gradient generator that avoids 'ugly' grays.