Blueprint is a markup language for GTK user interfaces. Internally, it compiles to GTKBuilder XML.

Color Picker is a simple color chooser written in GTK3. It supports both X and Wayland display servers.

Builder aims to be an integrated development environment (IDE) for writing GNOME-based software. It features fuzzy search, auto-completion, a mini code map, documentation browsing, Git integration, an integrated profiler via Sysprof, debugging support, and more.

This package provides themes and related elements that don't really fit in other upstream packages. It offers legacy support for GTK+ 2 versions of Adwaita, Adwaita-dark and HighContrast themes. It also provides index files needed for Adwaita to be used outside of GNOME.

Libart is a 2D drawing library intended as a high-quality vector-based 2D library with antialiasing and alpha composition.

Tecla is a keyboard layout viewer based on GTK 4 and Libadwaita.

This package provides GUPnP, an object-oriented framework for creating UPnP devices and control points, written in C using GObject and libsoup.

This library provides docking features for gtk+.

Cogl is a small library for using 3D graphics hardware to draw pretty pictures. The API departs from the flat state machine style of OpenGL and is designed to make it easy to write orthogonal components that can render without stepping on each others toes.

The GCR package contains libraries used for displaying certificates and accessing key stores. It also provides the viewer for crypto files on the GNOME Desktop.

GnomeVFS is the core library used to access files and folders in GNOME applications. It provides a file system abstraction which allows applications to access local and remote files with a single consistent API.

The aim of the handy library is to help with developing user interfaces for mobile devices using GTK+. It provides responsive GTK+ widgets for usage on small and big screens.

Apostrophe is a GTK+ based distraction-free Markdown editor. It uses pandoc as back-end for parsing Markdown.

Yelp-tools is a collection of scripts and build utilities to help create, manage, and publish documentation for Yelp and the web. Most of the heavy lifting is done by packages like yelp-xsl and itstool. This package just wraps things up in a developer-friendly way.

Libidl is a library for creating trees of CORBA Interface Definition Language (idl) files, which is a specification for defining portable interfaces. libidl was initially written for orbit (the orb from the GNOME project, and the primary means of libidl distribution). However, the functionality was designed to be as reusable and portable as possible.

Console is a simple terminal emulator for GNOME desktop

Orca is a screen reader that provides access to the graphical desktop via speech and refreshable braille. Orca works with applications and toolkits that support the Assistive Technology Service Provider Interface (AT-SPI).

UPower is an abstraction for enumerating power devices, listening to device events and querying history and statistics. Any application or service on the system can access the org.freedesktop.UPower service via the system message bus.

A collection of GStreamer video filters and effects to be used in photo-booth-like software, such as Cheese.

VTE is a library (libvte) implementing a terminal emulator widget for GTK+, and a minimal sample application (vte) using that. Vte is mainly used in gnome-terminal, but can also be used to embed a console/terminal in games, editors, IDEs, etc.

Grilo is a framework focused on making media discovery and browsing easy for application developers.

GNOME Online Miners provides a set of crawlers that go through your online content and index them locally in Tracker. It has miners for Facebook, Flickr, Google, ownCloud and SkyDrive.

GNOME Color Manager is a session framework that makes it easy to manage, install and generate color profiles in the GNOME desktop.

Komikku is an online/offline manga reader for GNOME, developed with the aim of being used with the Librem 5 phone.