Fast Light Toolkit

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Quick Info

Stable Release: v1.3.3
Stable Release Info: View
Snapshots: v1.3.x-r11893
Developer Roadmap: View

FLTK (pronounced "fulltick") is a cross-platform C++ GUI toolkit for UNIX®/Linux® (X11), Microsoft® Windows®, and MacOS® X. FLTK provides modern GUI functionality without the bloat and supports 3D graphics via OpenGL® and its built-in GLUT emulation.

FLTK is designed to be small and modular enough to be statically linked, but works fine as a shared library. FLTK also includes an excellent UI builder called FLUID that can be used to create applications in minutes.

FLTK is provided under the terms of the GNU Library Public License, Version 2 with exceptions that allow for static linking.


Current Poll [ Show All ]
The FLTK website was designed with speed in mind. The design as a result is very minimal. Should we change Please write your suggestions into the comments section. (please pick one)
I love the site the way it is
it only needs a different color scheme
it needs a redesign, but minimalistic is good
the FLTK site needs a complete redesign - please hire an artist
Results ]
(11805 votes, 20 comments)

Top 10 Links [ Show All ]
  XMolView (alpha 16.08)  
  Fl_Firmata 0.2  
  XLView 1.0.0  
  FL-Essentials 1.0.0  
  Ultimate Tic-Tac-Toe 1.0  
  The Larch 1.0 (beta)  
  System Information Retriever 1.0.4  
  fpwdman 1.0.6  
  AIM-UC 1.4  
  flsane 0.1.0  
** NOTE **
    Back in April 2013 we had to move the fltk.general and fltk.developer lists to google groups. Please join us there to reconnect. All postings from today on back through 2004 are available on the fltk Forums page.

FLUID ApplicationRecent Articles [ Show All ]

FLTK 1.3.x Weekly Snapshot, r11893
03:00 Aug 26, 2016 by mike, 0 comments
A new weekly snapshot of FLTK 1.3.x (r11893) is now available. Read ]

FLTK 1.3.x Weekly Snapshot, r11880
03:00 Aug 19, 2016 by mike, 0 comments
A new weekly snapshot of FLTK 1.3.x (r11880) is now available. Read ]

What are the Versions of FLTK?
03:02 Aug 17, 2016 by engelsman, 0 comments
There is a lot of confusion, especially for people who are new to FLTK, about the different versions that are available, what they offer, and when they will be released. This article attempts to clarify matters. Read ]

Using CMake to build an FLTK application
03:01 Aug 17, 2016 by engelsman, 0 comments
CMake is a powerful cross-platform build system, which already has support for FLTK, although this is not well documented on the Internet. This article provides a minimal CMake configuration for a simple FLTK application. Read ]

What is FLTK?
05:56 Aug 16, 2016 by mike, 3 comments
FLTK (pronounced "fulltick") is a LGPL'd C++ graphical user interface toolkit for X (UNIX®), macOS (aka OS X), OpenGL, and Windows (Microsoft® Windows® XP, 2000, and later). It is currently maintained by a small group of developers ... Read ]

FLTK 1.3.x Weekly Snapshot, r11871
03:00 Aug 12, 2016 by mike, 0 comments
A new weekly snapshot of FLTK 1.3.x (r11871) is now available. Read ]

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