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

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.

libdbusmenu passes a menu structure across DBus so that a program can create a menu simply without worrying about how it is displayed on the other side of the bus.

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.

Perl bindings to the 3.x series of the gtk+ toolkit. 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.

Volume Icon is a volume indicator and control applet for the Advanced Linux Sound Architecture. It sits in the system tray, independent of your desktop environment, and supports global key bindings.

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.

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.

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.

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

GNU Spread Sheet Widget is a library for Gtk+ which provides a widget for viewing and manipulating 2 dimensional tabular data in a manner similar to many popular spread sheet programs.

Pycairo is a set of Python bindings for the Cairo graphics library.

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

This package provides a global menu applet for use with desktop panels such as mate-panel and xfce4-panel.

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

gtksourceviewmm is a portable C++ library that extends the standard GTK+ framework for multiline text editing with support for configurable syntax highlighting, unlimited undo/redo, search and replace, a completion framework, printing and other features typical of a source code editor.

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.

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.

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.

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.

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.

Pango is a library for laying out and rendering text, with an emphasis on internationalization. Pango can be used anywhere that text layout is needed, but using Pango in conjunction with Cairo and/or Gtk2 provides a complete solution with high quality text handling and graphics rendering.

Dynamically loaded modules handle text layout for particular combinations of script and font backend. Pango provides a wide selection of modules, including modules for Hebrew, Arabic, Hangul, Thai, and a number of Indic scripts. Virtually all of the world's major scripts are supported.

In addition to the low level layout rendering routines, Pango includes Pango::Layout, a high level driver for laying out entire blocks of text, and routines to assist in editing internationalized text.

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.

HarfBuzz is an OpenType text shaping engine.