GoKawiilNew BUI library extracts Blender's UI engine for Python, Rust, JS and C++
A project called BUI packages Blender's widget rendering and interaction code into a standalone C-based UI library, usable without installing Blender. It offers bindings for Python, Rust, JavaScript/React, C, C++ and Dear ImGui, with documentation published at bui.preetham.top.
GoKawiil's interpretation of the reporting above, not reported fact.
By decoupling a battery-tested, highly optimized GUI toolkit from Blender, developers across multiple languages could gain access to a fast, native-feeling interface without building widget systems from scratch. The comparison to GPUI in the title suggests the creators are positioning BUI as a performance-focused alternative for developers evaluating UI runtimes, though independent benchmarks aren't cited here.
- BUI extracts Blender's widget rendering and interaction logic into a standalone C library.
- It supports bindings for Python, Rust, JavaScript/React, C, C++ and Dear ImGui.
- No Blender installation or knowledge is required to use the library.
Source: github.com, 2026-11-06
Published there as: “Blender's UI and Runtime: Much Faster Than GPUI”
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