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libui-ng

Free#54 of 61 in Desktop App Development Frameworks

libui-ng: A free, open-source C library for building native desktop GUIs across Windows, macOS, and Linux. Ranked #54 of 61 in Desktop App Development Frameworks by our editors (3.9/10); pricing: Free plan; best for C developers seeking a lightweight native GUI library.

3.9/10Editor score

Visit libui-ng

libui-ng3.9 Visit libui-ng

At a glance

Editor score
3.9 / 10
Pricing
Free plan
Best for
C developers seeking a lightweight native GUI library
Free plan
Yes
Paid from
Free
UI stack
Native
Facts checked
23 Oct 2026

Where it wins
- Uses native GUI technologies on supported desktop platforms
- Includes Meson build configuration and static or shared library options
- Provides API documentation, examples, and automated unit tests
Where it doesn't
- Describes itself as mid-alpha
- Targets desktop platforms, not mobile
- Officially maintained language binding is limited to Go

Our verdict on libui-ng

libui-ng is a free, open-source GUI library for C developers building desktop applications for Windows, macOS, or Linux. It uses the native GUI technologies of the desktop platforms it supports, making it a fit for developers who want a C-oriented library rather than a cross-platform interface layer with a distinct UI stack. It is aimed at solo and small-team development, and the project describes itself as mid-alpha, a relevant caveat for teams choosing a foundation for new software.

Build configuration and documentation are central parts of the offering. The project provides Meson-based build instructions and supports building as either a static or shared library. API documentation covers UI controls, and examples plus automated unit tests are included. The documented platform setup covers Windows, macOS, and Unix systems using GTK+. This gives developers practical reference material for getting oriented, while still leaving platform-specific development work to the application team.

The project is open source under the MIT license and is self-hosted; its listed support channel is documentation. Go is the only officially maintained language binding, so C is the clearest supported choice for application development, while developers seeking another maintained binding should assess alternatives. libui-ng suits developers who value native desktop GUIs, a C API, and a free library, and who can work with a project described as mid-alpha. Teams needing mobile targets or a stated commercial support offer should look elsewhere.

Your product? Our editors can test libui-ng in depth and publish a review, labelled as paid · from $149/mo →

libui-ng pricing

Plans Free planFree Free to use — no paid tier required for the core job.

See plans on libui-ng.github.io

libui-ng fact sheet

Free plan	Yes
Paid from	Free
Supported desktop OS	Multi_platform
UI stack	Native
Primary language	C
Open source	Yes
Mobile targets	No
App packaging	Not verified
Commercial support	Not verified
Deployment	Self-hosted
Platforms	Windows, macOS, Linux
Support	Docs
Built for	Solo, Small business (editorial estimate)
Pricing	Free plan
Website	libui-ng.github.io
Facts checked	23 Oct 2026

Alternatives to libui-ng

See all libui-ng alternatives →

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Featured on iTechGuides

libui-ng is listed in our Desktop App Development Frameworks directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 30 Oct 2026 · How we research and update