Addresses is a GNUstep address book that consists of a full-featured address book manager application, a source-code compatible replacement for Apple's AddressBook.framework (for accessing and manipulating address data programmatically), a framework of view/editor classes that make it easy to use Addresses from your own programs, and a number of tools. It is easy to use by both users and programmers and can store almost all imaginable data, including multiple phone numbers, emails, and addresses, photos, AIM/Jabber/ICQ/Yahoo IM details, and notes. It supports drag-and-drop and integrates well with GNUMail.
Decibel is a realtime communications framework, meant to integrate services like CTI (Computer Telephone Integration), VoIP (Voice over IP), text based chat, and instant messaging. End users find in Decibel one central place to manage all realtime communication settings and can easily configure and change responses to communication requests. It provides a simple, DBus-based API to the services like communication account management and connection to contacts.
Fid Core Library is the core library for the Frigand Imperial Desktop, a genuine Unix desktop environment based around multiprocessing, text-stream IPC, and the "everything is a file" concept. It supports Emacs-like extensibility, customizability, and built-in multi-buffer support.
GTK ADI Library is a library containing GTK ADI widgets. ADI stands from Advanced Document Interface, and is an MDI (Multiple Document Interface) implementation. It contains a common MDI interface widget and several MDI representations (views). There are currently two views available: a "classical for GTK" tabbed MDI view, and an aligned MDI view. The aligned MDI view can have all child windows visible on the same parent screen, but without wasted space between them as can usually happen when a traditional MDI widget is used. Further development will include a window MDI view, where all the child windows are represented by the standard GTK windows or dialogs.
GTK, which stands for the Gimp ToolKit, is a library for creating graphical user interfaces. It is designed to be small and efficient, but still flexible enough to allow the programmer freedom in the interfaces created. GTK provides some unique features over standard widget libraries.
The goal of the General Applet Interface Library is to give programmers a simple yet powerful applet interface. This library supports wmapplet/dockapps, GNOME 2 panel applets, and ROX panel applets. The applet programmer doesn't have to care about where the applet will be used, since the library handles that. Over 50% of the code in a dockapp and a GNOME 2 Panel applet does only one thing, setting up the applet window. With GAI, this can be reduced to just a few lines of code.
Glib Binding properties is a system that allows developers to bind properties of GLib and GTK+ objects (Ada95 bindings are also available). This makes it possible to synchronize the properties of several objects, so that when one property changes the properties bound with it automatically change accordingly. This often eliminates the need to write callbacks watching for changes of properties. It supports one-way and mutual bindings and bindings with transformation functions.