Calls can make and answer phone calls using different backends, such as ModemManager for phones and SIP for VoIP.

Librsvg is a library to render SVG images to Cairo surfaces. GNOME uses this to render SVG icons. Outside of GNOME, other desktop environments use it for similar purposes. Wikimedia uses it for Wikipedia's SVG diagrams.

libadwaita offers widgets and objects to build GNOME applications scaling from desktop workstations to mobile phones. It is the successor of libhandy for GTK4.

GNOME Contacts organizes your contact information from online and offline sources, providing a centralized place for managing your contacts.

This package provides a library to handle resource discovery and announcement over SSDP and a debugging tool, gssdp-device-sniffer.

Drawing is a basic image editor aiming at the GNOME desktop.

Tracker is a search engine and triplestore for desktop, embedded and mobile.

It is a middleware component aimed at desktop application developers who want their apps to browse and search user content. It's not designed to be used directly by desktop users, but it provides a commandline tool named tracker for the adventurous.

Tracker allows your application to instantly perform full-text searches across all documents. This feature is used by the {emphsearch bar in GNOME Files, for example. This is achieved by indexing the user's home directory in the background.

Tracker also allows your application to query and list content that the user has stored. For example, GNOME Music displays all the music files that are found by Tracker. This means that GNOME Music doesn't need to maintain a database of its own.

If you need to go beyond simple searches, Tracker is also a linked data endpoint and it understands SPARQL.

Notification-Daemon is the server implementation of the freedesktop.org desktop notification specification.

Sudoku is a Japanese logic game that exploded in popularity in 2005. GNOME Sudoku is meant to have an interface as simple and unobstrusive as possible while still providing features that make playing difficult Sudoku more fun.

libgnome-games-support is a small library intended for internal use by GNOME Games, but it may be used by others.

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

GNOME Screenshot is a utility used for taking screenshots of the entire screen, a window or a user defined area of the screen, with optional beautifying border effects.

The libdazzle library is a companion library to GObject and Gtk+. It provides various features that the authors wish were in the underlying library but cannot for various reasons. In most cases, they are wildly out of scope for those libraries. In other cases, they are not quite generic enough to work for everyone.

The libgnomeui library provides additional widgets for applications. Many of the widgets from libgnomeui have already been ported to GTK+.

libchamplain is a C library providing a ClutterActor to display maps. It also provides a Gtk+ widget to display maps in Gtk+ applications. Python and Perl bindings are also available. It supports numerous free map sources such as OpenStreetMap, OpenCycleMap, OpenAerialMap, and Maps for free.

Dconf is a low-level configuration system. Its main purpose is to provide a backend to GSettings on platforms that don't already have configuration storage systems.

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.

Dia can be used to draw different types of diagrams, and includes support for UML static structure diagrams (class diagrams), entity relationship modeling, and network diagrams. The program supports various file formats like PNG, SVG, PDF and EPS.

NetworkManager is a system network service that manages your network devices and connections, attempting to keep active network connectivity when available. It manages ethernet, WiFi, mobile broadband (WWAN), and PPPoE devices, and provides VPN integration with a variety of different VPN services.

GNOME-JS-Common provides common modules for GNOME JavaScript bindings.

Database of broadband connection configuration.

GNOME LaTeX is a LaTeX editor for the GNOME desktop. It has features such as build tools, completion of LaTeX commands, structure navigation, symbol tables, document templates, project management, spell-checking, menus and toolbars.

Piper is a GTK+ application for configuring gaming mice with onboard configuration for key bindings via libratbag. Piper requires a ratbagd daemon running with root privileges. It can be run manually as root, but is preferably configured as a DBus service that can launch on demand. This can be configured by enabling the following service, provided there is a DBus service present:

(simple-service 'ratbagd dbus-root-service-type (list libratbag))

gspell provides a flexible API to add spell-checking to a GTK+ application. It provides a GObject API, spell-checking to text entries and text views, and buttons to choose the language.