Libdatrie is an implementation of double-array structure for representing trie. Trie is a kind of digital search tree.

Layer Shell is a Wayland protocol for desktop shell components, such as panels, notifications and wallpapers. It can be used to anchor windows to a corner or edge of the output, or stretch them across the entire output. It supports all Layer Shell features including popups and popovers.

Libpanel provides a library to create IDE-like applications using GTK and libadwaita. It has widgets for panels, docks, columns and grids of pages. Primarily, its design and implementation focus around the GNOME Builder and Drafting projects.

GdkPixbuf is a library that loads image data in various formats and stores it as linear buffers in memory. The buffers can then be scaled, composited, modified, saved, or rendered.

Girara is a library that implements a user interface that focuses on simplicity and minimalism. Currently based on GTK+, a cross-platform widget toolkit, it provides an interface that focuses on three main components: a so-called view widget that represents the actual application, an input bar that is used to execute commands of the application and the status bar which provides the user with current information.

Guile-RSVG wraps the RSVG library for Guile, allowing you to render SVG images onto Cairo surfaces.

Perl bindings to the 2.x series of the Gtk+ widget set. This module allows you to write graphical user interfaces in a Perlish and object-oriented way, freeing you from the casting and memory management in C, yet remaining very close in spirit to original API.

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.

Cairo provides Perl bindings for the vector graphics library cairo. It supports multiple output targets, including PNG, PDF and SVG. Cairo produces identical output on all those targets.

The Assistive Technology Service Provider Interface, core components, is part of the GNOME accessibility project.

Cairo is a 2D graphics library with support for multiple output devices. Currently supported output targets include the X Window System (via both Xlib and XCB), Quartz, Win32, image buffers, PostScript, PDF, and SVG file output. Experimental backends include OpenGL, BeOS, OS/2, and DirectFB.

GtkDoc is a tool used to extract API documentation from C-code like Doxygen, but handles documentation of GObject (including signals and properties) that makes it very suitable for GTK+ apps and libraries. It uses docbook for intermediate files and can produce html by default and pdf/man-pages with some extra work.

GtkSheet is a matrix widget for GTK+. It consists of an scrollable grid of cells where you can allocate text. Cell contents can be edited interactively through a specially designed entry, GtkItemEntry. It is also a container subclass, allowing you to display buttons, images and any other widget in it. You can also set many attributes such as border, foreground and background colors, text justification and more.

Cairomm provides a C++ programming interface to the Cairo 2D graphics library.

This package contains the standard GTK+ 2.x theming engines including Clearlooks, Crux, High Contrast, Industrial, LighthouseBlue, Metal, Mist, Redmond95 and ThinIce.

PNMixer is a simple mixer application designed to run in system tray. It integrates nicely into desktop environments that don't have a panel that supports applets and therefore can't run a mixer applet. In particular, it's been used quite a lot with fbpanel and tint2 but should run fine in any system tray.

PNMixer is designed to work on systems that use ALSA for sound management. Any other sound driver like OSS or FFADO are, currently, not supported. There is no official PulseAudio support, at the moment, but it seems that PNMixer behaves quite well anyway when PA is running.

LibThai is a set of Thai language support routines aimed to ease developers’ tasks to incorporate Thai language support in their applications.

Guile-Cairo wraps the Cairo graphics library for Guile Scheme. Guile-Cairo is complete, wrapping almost all of the Cairo API. It is API stable, providing a firm base on which to do graphics work. Finally, and importantly, it is pleasant to use. You get a powerful and well-maintained graphics library with all of the benefits of Scheme: memory management, exceptions, macros, and a dynamic programming environment.

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).

GtkDoc is a tool used to extract API documentation from C-code like Doxygen, but handles documentation of GObject (including signals and properties) that makes it very suitable for GTK+ apps and libraries. It uses docbook for intermediate files and can produce html by default and pdf/man-pages with some extra work.

Layer Shell is a Wayland protocol for desktop shell components, such as panels, notifications and wallpapers. It can be used to anchor windows to a corner or edge of the output, or stretch them across the entire output. It supports all Layer Shell features including popups and popovers.

Dragon is a lightweight drag-and-drop source for X where you can run:

dragon file.tar.gz

to get a window with just that file in it, ready to be dragged where you need it. What if you need to drag into something? Using:

dragon --target

you get a window you can drag files and text into. Dropped items are printed to standard output.

Pangox was a X backend to pango. It is now obsolete and no longer provided by recent pango releases. pangox-compat provides the functions which were removed.

Guile-RSVG wraps the RSVG library for Guile, allowing you to render SVG images onto Cairo surfaces.