Toolbox
Low-level Unity tools: code, shaders and editor tools. Each tool has a showcase sample (Package Manager → Toolbox → Samples).
Install
In Unity: Edit → Project Settings → Package Manager → Scoped Registries → + — Name Petar Mavrodiev, URL https://registry.npmjs.com, Scope com.mavrodiev → Save. Then Window → Package Manager → My Registries → Petar Mavrodiev.