Hacker News (AI keywords)Jun 17, 2026, 12:04 PMpeter_d_sherman

MicroUI – A Tiny, Portable, Immediate-Mode UI Library in ANSI C

Original: MicroUI – A tiny, portable, immediate-mode UI library written in ANSI C

MicroUI is a minimal ANSI C immediate-mode GUI library designed for portability and easy embedding.

MicroUI is a compact immediate-mode UI library written in ANSI C, requiring no external dependencies and no specific rendering backend. It generates a per-frame command list that the host application submits to any renderer it chooses. Ideal for debug overlays, tool UIs, and embedded or resource-constrained environments where heavier frameworks are impractical.

MicroUI is a small, self-contained immediate-mode graphical user interface library written in ANSI C by developer rxi, who is also known for the lightweight text editor Lite (now maintained as the community fork lite-xl). The library surfaces on Hacker News as a resource of interest to developers working in low-level or constrained environments.

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