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 Tweaks allows adjusting advanced configuration settings in GNOME. This includes things like the fonts used in user interface elements, alternative user interface themes, changes in window management behavior, GNOME Shell appearance and extension, etc.

Terminator allows you to run multiple GNOME terminals in a grid and tabs, and it supports drag and drop re-ordering of terminals.

JSON-GLib is a library providing serialization and described by RFC 4627. It implements a full JSON parser and generator using GLib and GObject, and integrates JSON with GLib data types.

GNOME Online Accounts provides interfaces so that applications and libraries in GNOME can access the user's online accounts. It has providers for Google, ownCloud, Facebook, Flickr, Windows Live, Pocket, Foursquare, Microsoft Exchange, Last.fm, IMAP/SMTP, Jabber, SIP and Kerberos.

Gamin is a file and directory monitoring system defined to be a subset of the FAM (File Alteration Monitor) system. This is a service provided by a library which detects when a file or a directory has been modified.

This package provides a small library for handling and implementation of UPnP A/V profiles.

Libgee is a utility library providing GObject-based interfaces and classes for commonly used data structures.

Totem-pl-parser is a GObjects-based library to parse and save playlists in a variety of formats.

This extension of NetworkManager allows it to take care of connections to virtual private networks (VPNs) via Fortinet SSLVPN.

This package provides a remote desktop server for GNOME.

GNOME Display Manager is a system service that is responsible for providing graphical log-ins and managing local and remote displays.

Seahorse is a GNOME application for managing encryption keys and passwords in the GNOME keyring.

This package contains tools for managing and manipulating Bluetooth devices using the GNOME desktop.

This package provides a spell-checker for GtkTextView widgets.

LibSoup is an HTTP client/server library for GNOME. It uses GObjects and the GLib main loop, to integrate well with GNOME applications.

geocode-glib is a convenience library for geocoding (finding longitude, and latitude from an address) and reverse geocoding (finding an address from coordinates) using the Nominatim service. geocode-glib caches requests for faster results and to avoid unnecessary server load.

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.

Caribou is an input assistive technology intended for switch and pointer users.

This library allows you to use the Facebook API from GLib/GObject code.

GNOME Boxes is a simple application to view, access, and manage remote and virtual systems. Note that this application requires the libvirt and virtlog daemons to run. Use the command info '(guix) Virtualization Services' to learn how to configure these services on the Guix System.

To make it possible to redirect USB devices as a non-privileged user, some extra configuration is necessary: if you use the gnome-desktop-service-type, you should add the gnome-boxes package to the extra-packages field of the gnome-desktop-configuration, for example:

(service gnome-desktop-service-type
         (gnome-desktop-configuration
          (extra-packages (list gnome-boxes gnome-essential-extras))))

If you do not use the gnome-desktop-service-type, you will need manually extend the polkit-service-type with the spice-gtk package, as well as configure the libexec/spice-client-glib-usb-acl-helper executable of spice-gtk as setuid, to make it possible to redirect USB devices as a non-privileged user.

GUPnP-IGD is a library to handle UPnP IGD port mapping.

libratbag provides ratbagd, a DBus daemon to configure input devices, mainly gaming mice. The daemon provides a generic way to access the various features exposed by these mice and abstracts away hardware-specific and kernel-specific quirks. There is also the ratbagctl command line interface for configuring devices.

libratbag currently supports devices from Logitech, Etekcity, GSkill, Roccat, Steelseries.

The ratbagd DBus service can be enabled by adding the following service to your operating-system definition:

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

Bonobo is a framework for creating reusable components for use in GNOME applications, built on top of CORBA.