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Stable Release: v1.3.4
Stable Release Info: View
Snapshots: v1.4.x-r13018
Developer Roadmap: View
FLTK Commit Activity:
(updated weekly)
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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 ]
(15826 votes, 21 comments)

Top 10 Links [ Show All ]
  SpiritVNC - FLTK 0.3.11  
  Fltk_Contour 5.3.2  
  BP-ANNA (Artificial Neural Network) 1.9.2  
  flPhoto 1.3.1  
  fldigi 4.0.13  
  fl_logbook 1.2.4  
  flimage 1.13.0  
  Gmsh 3.0.0  
  flmusic 1.3.1  
** 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 ]

What are the Versions of FLTK?  Sticky
15:39 Mar 04, 2017 by engelsman, 3 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 ]

FLTK 1.4.x Weekly Snapshot, r13018
03:00 Aug 17, 2018 by mike, 0 comments
A new weekly snapshot of FLTK 1.4.x (r13018) is now available. Read ]

How does resizing work?
16:33 Mar 02, 2018 by matt, 5 comments
Layout management is an important part of creating a user friendly UI. FLTK uses the 'Fl_Widget::resizable()' method to achieve almost any kind of resizing behavior. Read ]

FeedingBottle 3.3
16:43 Feb 11, 2018 by ZhaoChunsheng, 0 comments
FeedingBottle has been open source now. Read ]

Hunt the wumpus 0.9
12:08 Nov 17, 2017 by ans, 0 comments
The game based on FLTK using an MVC (Model View Controller) pattern Read ]

Windows how-to: create a stdout/stderr console at runtime for /subsystem:windows app
14:59 Sep 19, 2017 by greg.ercolano, 1 comment
If you have an FLTK Windows GUI application built with /subsystem:windows, you can create a DOS style window and redirect stdout/stderr to it at runtime. Read ]

Gmsh 3.0.0
21:16 Apr 13, 2017 by geuzaine.acm.caltech, 0 comments
Gmsh 3.0.0 is out, with full support for constructive solid geometry Read ]

flxine2 0.6.10
12:44 Mar 30, 2017 by szukw000, 0 comments
xine with an FLTK front end. [The homepage address has changed. Mar 30 2017] Read ]

flmusic 1.3.0
12:39 Mar 30, 2017 by szukw000, 0 comments
This FLTK application is a very simple music player. [The homepage address has changed. Mar 30 2017] Read ]

flimage 1.12.0
12:39 Mar 30, 2017 by szukw000, 0 comments
This FLTK application is an image viewer. [The homepage address has changed. Mar 30 2017] Read ]

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