cococry/leif

Health v2 · maintenance only

Flags: no_releases no_license

Adoption not part of the score

1042 stars · 46 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Leif is a minimal, configurable, GPU-accelerated immediate mode UI library written in C with modern OpenGL. It includes a fast in-house batch renderer with an exposed drawing API, full theming/styling support, exposed UI state, and a complete input-handling subsystem.

Use cases

• build immediate mode GUIs in C or C++
• render debug tooling and editor overlays with OpenGL
• create custom UI components on top of an exposed renderer and state
• add styled, themeable interfaces to desktop applications
• use a GPU-accelerated batch renderer for non-UI drawing tasks
• handle keyboard and mouse input in a windowed app

When to choose

• you want a lightweight, minimal immediate mode UI in C/C++ with modern OpenGL
• you need full control over rendering and UI state to build custom widgets
• you want easy theming and styling of every visible UI element
• your project already uses GLFW or a replaceable windowing backend

When to avoid

• you need a retained-mode or native platform UI toolkit
• you require a mature license-guaranteed library for commercial use (no license is specified)
• you need mobile, web, or non-OpenGL rendering backends
• you want a batteries-included framework with extensive prebuilt widgets and documentation

Facets

library · maturity active

ui-components graphics gui graphics desktop-applications developer-tools cpp c windows cross-platform immediate-mode-ui opengl imgui gpu-accelerated glfw theming batch-renderer game-development linux macos desktop

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