fltk ☆

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Description:
Cross-platform C++ GUI toolkit

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: gui c++ toolkit cross-platform ui

Install: brew install fltk

About:
FLTK (Fast Light Toolkit) is a cross-platform C++ GUI library designed for speed and low resource usage. It provides native-looking GUIs for Unix/Linux (X11), macOS, and Windows. Its main value proposition is creating lightweight, fast applications without heavy dependencies.

Key Features:

Cross-platform C++ GUI toolkit
Lightweight and fast performance
Native look and feel on supported platforms
Low dependencies

Use Cases:

Building lightweight desktop applications
Developing embedded system user interfaces
Porting C++ GUI apps across operating systems

Alternatives:

Qt – Qt is more feature-rich but significantly larger and dual-licensed (GPL/Commercial).
wxWidgets – wxWidgets uses native widgets for a truly native look, whereas FLTK draws its own widgets.

Version History

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