First screen, captured 4 days ago. Open the video.

CUI – Native UI components for C

What HN thinks

A shiny ShadCN lookalike in C walks into HN and gets asked for its papers, its commit history, and its security clearance.

Vibecoded slop, little lasting value
Many see a four-day-old, Claude-written library with untested components and messy code, doubting it will be maintained or offers anything over prompting your own.
Actually looks nice and lightweight
Others, including one who built and tested it, praise the polish, tiny binaries, low memory and few dependencies, while noting it redraws every frame and lacks theming.
Web-brained design and naming issues
Critics say components mimic web/touch aesthetics rather than real UX primitives, 'native' is misleading, and CUI already means Controlled Unclassified Information.

Consensus: Most agree it is obviously AI-generated and should be treated cautiously for real use, even if the demo looks good.

Recommended in the comments

Clay ↗ (library): Praised as a carefully engineered, human-made alternative.
Fyne ↗ (library): Cited as a well-designed UI framework in a lower-level language.
libui-ng (library): Mentioned as genuinely native widgets.
Fil-C ↗ (tool): Suggested for getting memory safety in C.

Summarised by Claude from the comment thread 3 days ago.

Points: 168
Comments: 93
Best rank: #3
Posted: 2026-11-09 by hilti
Category: Programming

c immediate-mode-gui ui-components desktop-apps c99 cross-platform

All captures:

Full page

Captured 4 days ago. Click for the whole screenshot.

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