Azul.rs icon
Azul.rs icon

Azul.rs

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Azul is a free, functional, immediate-mode GUI framework for rapid development of desktop applications written in Rust, supported by the Mozilla WebRender rendering engine.

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Cost / License

  • Free
  • Open Source (MIT)

Since

  • Since 2019

Updated

  • Updated Aug 2026

Platforms

  • Windows
  • Mac
  • Linux
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    Paul added Azul.rs as alternative to BUI

Azul.rs information

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Development

GitHub repository

  •  6,113 Stars
  •  225 Forks
  •  21 Open Issues
  •   Updated  
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What is Azul.rs?

Azul is a free, functional, immediate-mode GUI framework for rapid development of desktop applications written in Rust icon Rust, supported by the Mozilla WebRender rendering engine.

Features

  • Cross-platform GUI toolkit (Windows, Linux, Mac)
  • Immediate-mode API, widgets are composed via function composition
  • CSS styling engine, flexbox-based layout
  • Built-in controls for common user interface elements
  • Create custom widgets via function composition
  • SVG rendering engine, 2D drawing helpers (lines, circles, rects, etc.)
  • OpenGL integration
  • Async I/O helper functions
  • XML serialization and hot-reload, built-in XML-to-Rust compiler
  • Single deployment binary, minimal binary size (roughly 5MB all-incl.),
  • CPU (0 - 4%) and RAM usage (~ 50MB total)
  • Hardware-accelerated OpenGL rendering (0.5 - 4ms)
  • React-like DOM diffing for incremental layout and styling changes