This organization holds the the repos of fltk-rs, as well as the fltk-book, demos and other supporting libraries and tools such as:

• fltk-theme: To theme your fltk application.
• fl2rust: This enables using FLUID, FLTK's RAD design tool with your fltk-rs apps. It translates fluid files to Rust.
• fltk-table: Provides a smart table widget.
• fltk-observe: A lightweight Rust library that layers an observer-based state management system on top of fltk-rs. By embracing the observer pattern, fltk-observe makes it easy to implement MVC or MVVM architectures, keeping your UI code clean, reactive, and maintainable.
• fltk-evented: Provides a listener widget allowing immediate-mode style trigger handling (instead of callbacks) in both sync and async code.
• fltk-accesskit: Provides screen reader support and accessibility via accesskit to fltk guis.
• fltk-decl: Provides a declarative way of describing your gui.
• fltk-calendar: Provides a calendar widget.
• flemish: Provides an Elm-like architecture for fltk apps.
• fltk-grid: Provides a grid widget to your application.
• fltk-egui: Provides egui integration with fltk through OpenGL.

...Among others.

You might also want to check the greater Rust ecosystem for other libraries offering additional functionality to fltk:

• egui-fltk-frontend: Provides egui integration with fltk through wgpu.
• fltk-builder: Enables building an FLTK UI in Rust with a builder pattern as well as offering id's to fltk widgets.
• fltk-plot: An interactive plotting library for Rust

You can also take a look at the project showcase issue which lists more projects using fltk-rs.