# FLTK

13 Hacker News commenters recommended FLTK and 9 criticized it, November 2025 to November 2026. It was recommended in 7 of 13 months.

**Verdict:** Small, fast, statically linked C++ GUI library that is cross-platform and still maintained; critics say its theming needs work and it is hard to bind from other languages.

## Why people recommend it

- Small, fast and lightweight (3 comments): "Fltk even goes lower to single digits. Crazy what fltk can manage to do even if creating simple utility apps like notepad or calculator." ([source](https://news.ycombinator.com/item?id=49813701)) "FLTK is great at being fast and light, that’s about it." ([source](https://news.ycombinator.com/item?id=47479505)) "small, dependable and cross-platform" ([source](https://news.ycombinator.com/item?id=47211979))
- Statically linked and easy to vendor (2 comments): "it's also small enough to where you can vendor it and build it alongside your program" ([source](https://news.ycombinator.com/item?id=46750449)) "FLTK is also designed to be statically linked with your program" ([source](https://news.ycombinator.com/item?id=46675136))
- Wayland support and active maintenance (3 comments): "Version 1.4 is really nice, with Wayland support, and they even draw custom window decorations on GNOME" ([source](https://news.ycombinator.com/item?id=49125162)) "Unlike GTK 1.x it is still maintained." ([source](https://news.ycombinator.com/item?id=47442682)) "And yes it supports Wayland now." ([source](https://news.ycombinator.com/item?id=45928461))
- Charming retro desktop feel (2 comments): "FLTK in 2025? Why not? It does have its charm!" ([source](https://news.ycombinator.com/item?id=46176540)) "The 90s Linux desktop vibes hit like a hammer." ([source](https://news.ycombinator.com/item?id=48140568))

## What people warn about

- C++ hampers language bindings (2 comments): "fltk is c++ based which makes language bindings significantly harder in general" ([source](https://news.ycombinator.com/item?id=49127024)) "If fltk had C bindings it would have been a thing long ago" ([source](https://news.ycombinator.com/item?id=45834003))

## Alternatives hackers recommend

- [Qt](https://hackerapproved.com/p/qt.md): 191 recommend
- [GTK](https://hackerapproved.com/p/gtk.md): 85 recommend
- [Windows Forms](https://hackerapproved.com/p/winforms.md): 76 recommend
- [SwiftUI](https://hackerapproved.com/p/swiftui.md): 75 recommend
- [Tcl/Tk](https://hackerapproved.com/p/tcl-tk.md): 61 recommend

## Cite as

Hacker Approved, "FLTK", https://hackerapproved.com/p/fltk/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).