Quick start SDK Reference Demos Download

Cross-Platform C SDK

NAppGUI Cross-platform SDK Demo application

NAppGUI is a professional SDK to build cross-platform desktop applications using The C Programming Language. C++ is supported but not required, an entire program can be written using ANSI C90. NAppGUI has built as a lightweight layer on top of the native APIs, that allows create portable programs extremelly fast and small without any external dependency. All requirements come standard with the operating system itself.

C programming stack

Get the Demo

You can start testing the demo applications on Windows, macOS and Linux. If you are a brave person and want create your own Hello World! program, you can download the free SDK package, that includes the full version for Visual Studio 2019.

A set of demo applications for Windows, macOS and Linux is available here:

Download Demo Applications

A binary free version of the SDK for Visual Studio 2019 is available here:

Download NAppGUI SDK

All platforms, all compilers

NAppGUI supports all Visual Studio versions since 2005 and Xcode since 3.0 (2007). Programs will run in Windows XP, Mac OSX Leopard and above. The SDK detects modern compilers and operating systems, using the newest features when are available.

Updated to VS2022, macOS Monterey, Apple M1 and Ubuntu 20.04 LTS (gcc-9).

All C compilers and platforms supported by NAppGUI

Widely documented

We have made a great effort to provide NAppGUI with extensive documentation in English and Spanish languages. You can start with the Quick Start and Demos sections, where will find several easy to understand coding examples. If you want go deeper in NAppGUI knowledge, go to User's Guide and Library Reference. Also, a printable .PDF version of the entire site is available in a fancy eBook format.

For any technical question about the use of this software, please use StackOverflow with [nappgui] tag. Your contributions could help other users with the same questions.

For bug reporting or feature requests, please use the issue section of the GitHub project repository.

Powerfull dynamic GUIs

User interfaces are live objects in constant change. Resizable windows, responsive panels, runtime translations, font changes, etc are crappy to manage from "static" visual resource editors. NAppGUI provides its own layout-based gui composer that recomputes any change taking account the real size of native controls. All applications will have the native look and feel of the operating system where are running.

static void i_OnLangPopUp(Ctrl *ctrl, Event *e)
    const EvButton *params = event_params(e, EvButton);
    static const char_t *LANGS[] = { "en_US", "es_ES", "pt_PT", "it_IT", "vi_VN", "ru_RU", "ja_JP" };
Runtime translations

No .NET, no .DLLs, no MFC, no VC++ Redist, no Runtime environments, no Swift

NAppGUI only calls the Win32 API and GDI+. Doesn't use .NET, MFC, ATL and any other kind of redundant technology. The static linking will produce self-contained small binaries. NAppGUI neither use STL, only a small subset of The Standard C Library that also will be linked to the final product, so any VC++ Redistributable package will be required.

Your C program will compile without changes in modern Macs, taking advantage of latests Apple SDKs without porting them to Swift or Objective-C.

Static linking


NAppGUI is an OpenSource project and is distributed under MIT license. Please contact us for more information.

© 2015-2020 Francisco García Collado - All rights reserved