GTK+, or the GIMP Toolkit, is a multi-platform toolkit for creating graphical user interfaces. Offering a complete set of widgets, GTK+ is suitable for projects ranging from small one-off tools to complete application suites.

Pangomm provides a C++ programming interface to the Pango text rendering library.

Pango is a library for laying out and rendering of text, with an emphasis on internationalization. Pango can be used anywhere that text layout is needed, though most of the work on Pango so far has been done in the context of the GTK+ widget toolkit. Pango forms the core of text and font handling for GTK+-2.x.

GdkPixbuf-Xlib contains the deprecated API for integrating GdkPixbuf with Xlib data types. This library was originally shipped by gdk-pixbuf, and has since been moved out of the original repository. No newly written code should ever use this library.

GTKmm is the official C++ interface for the popular GUI library GTK+. Highlights include typesafe callbacks, and a comprehensive set of widgets that are easily extensible via inheritance. You can create user interfaces either in code or with the Glade User Interface designer, using libglademm. There's extensive documentation, including API reference and a tutorial.

GtkSourceView is a text widget that extends the standard GTK+ text widget GtkTextView. It improves GtkTextView by implementing syntax highlighting and other features typical of a source code editor.

GtkSpell provides word-processor-style highlighting and replacement of misspelled words in a GtkTextView widget.

This package is a companion to xdg-user-dirs to integrate it with the GNOME desktop and GTK applications. It gets run during login to create default GTK bookmarks files containing the user directories, and to rename these directories if the locale changes.

Volctl is a PulseAudio-enabled tray icon volume control and OSD applet for graphical desktops. It's not meant to be an replacement for a full-featured mixer application. If you're looking for that check out the excellent pavucontrol.

Murrine is a cairo-based GTK+ theming engine. It is named after the glass artworks done by Venicians glass blowers.

Graphene provides graphic types and their relative API; it does not deal with windowing system surfaces, drawing, scene graphs, or input.

HarfBuzz is an OpenType text shaping engine.

ClipIt is a clipboard manager with features such as a history, search thereof, global hotkeys and clipboard item actions. It was forked from Parcellite and adds bugfixes and features.

GtkDatabox is a widget for live display of large amounts of fluctuating numerical data. It enables data presentation (for example, on linear or logarithmic scales, as dots or lines, with markers/labels) as well as user interaction (e.g. measuring distances).

Guile-XCB implements the XCB protocol and provides all the tools necessary to write X client code in Guile Scheme without any external dependencies.

Guile-WM is a simple window manager that's completely customizable—you have total control of what it does by choosing which modules to include. Included with it are a few modules that provide basic TinyWM-like window management, some window record-keeping, multi-monitor support, and emacs-like keymaps and minibuffer. At this point, it's just enough to get you started.

Guile-Reader is a simple framework for building readers for GNU Guile.

The idea is to make it easy to build procedures that extend Guile’s read procedure. Readers supporting various syntax variants can easily be written, possibly by re-using existing “token readers” of a standard Scheme readers. For example, it is used to implement Skribilo’s R5RS-derived document syntax.

Guile-Reader’s approach is similar to Common Lisp’s “read table”, but hopefully more powerful and flexible (for instance, one may instantiate as many readers as needed).

Haunt is a static site generator written in Guile Scheme. Haunt features a functional build system and an extensible interface for reading articles in any format.

Fortran is great in expressing operations on multi-dimensional arrays of numbers. Scheme is great at expressing your coding thoughts. This project is an attempt to combine both into something useful.

guile-avatar helps you to determine avatars (or profile pictures) for email addresses using the Libravatar specification.

This package provides a library (lsp-server) and an executable guile-lsp-server that can be used by LSP clients in order to provide IDE functionality for Guile Scheme.

guile-ncurses provides Guile language bindings for the ncurses library.

Guile-ICS is an iCalendar (RFC5545) and vCard (RFC6350) format parser library written in pure Scheme. The library can be used to read and write iCalendar/vCadr data and convert the data from/to various formats.

The library is shipped with documentation in Info format and usage examples.

Guile-bstructs provides an efficient implementation of low-level binary structures for Guile Scheme inspired by Chez Scheme's ftypes.