LGPLv2+ and LGPLv2+ with exceptions and GPLv2+ and GPLv2+ with exceptions and BSD and Inner-Net-2.0 and ISC and Public Domain and GFDL-1.3-only
The ATK library provides a set of interfaces for adding accessibility support to applications and graphical user interface toolkits. By supporting the ATK interfaces, an application or toolkit can be used with tools such as screen readers, magnifiers, and alternative input devices.
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The GNU C Library project provides the core libraries for the GNU system and GNU/Linux systems, as well as many other systems that use Linux as the kernel. These libraries provide critical APIs including ISO C11, POSIX.1-2008, BSD, OS-specific APIs and more. These APIs include such foundational facilities as open, read, write, malloc, printf, getaddrinfo, dlopen, pthread_create, crypt, login, exit and more.
This library allows to manipulate XML files. It includes support to read, modify and write XML and HTML files. There is DTDs support this includes parsing and validation even with complex DtDs, either at parse time or later once the document has been modified. The output can be a simple SAX stream or and in-memory DOM like representations. In this case one can use the built-in XPath and XPointer implementation to select sub nodes or ranges. A flexible Input/Output mechanism is available, with existing HTTP and FTP modules and combined to an URI library.
The core library that forms the basis for projects such as GTK+ and GNOME
GLib is a bundle of three (formerly five) low-level system libraries written in C and developed mainly by GNOME. GLib's code was separated from GTK, so it can be used by software other than GNOME and has been developed in parallel ever since.
Cairo is a 2D graphics libarary with support for multiple output devices. It provides high-quality display and print output and this package also contains functionality to make cairo graphics library integrate well with GObject used by GNOME.
GTK is a multi-platform toolkit for creating graphical user interfaces. Offering a complete set of widgets, GTK is suitable for projects ranging from small one-off tools to complete application suites. This package contains version 4 of GTK.
GTK+ is an object-oriented widget toolkit written in the programming language C; it has a C-based object-oriented architecture that allows for maximum flexibility. The GTK+ library contains a set of graphical control elements (widgets)for creating graphical user interfaces. This package contains version 3 of GTK+.
GtkSourceView is a GNOME library that extends GtkTextView, the standard GTK+ widget for multiline text editing. GtkSourceView adds support for syntax highlighting, undo/redo, file loading and saving, search and replace, a completion system, printing, displaying line numbers, and other features typical of a source code editor. This package contains version 4 of GtkSourceView.
GTK+ is a library for creating graphical user interfaces. The library is created in C programming language. The GTK+ is also called the GIMP Toolkit. Originally, the library was created while developing the GIMP image manipulation program.
Introspection system for GObject-based libraries
GObject Introspection can scan C header and source files in order to generate introspection "typelib" files. It also provides an API to examine typelib files, useful for creating language bindings among other things.
Library implementing the Unicode Bidirectional Algorithm
A library to handle bidirectional scripts (for example Hebrew, Arabic), so that the display is done in the proper way; while the text data itself is always written in logical order and display in a different direction .
System for layout and rendering of internationalized text
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+. Pango is designed to be modular; the core Pango layout engine can be used with different font backends. The integration of Pango with Cairo provides a complete solution with high quality text handling and graphics rendering.
HarfBuzz is a text-shaping engine. If you give HarfBuzz a font and a string containing a sequence of Unicode codepoints, HarfBuzz selects and positions the corresponding glyphs from the font, applying all of the necessary layout rules and font features. HarfBuzz then returns the string to you in the form that is correctly arranged for the language and writing system.
gdk is a multi-platform toolkit for creating graphical user interfaces.
gdk is written in C but has been designed from the ground up to support a wide range of languages. It provide a complete set of widgets,and suitable for projects ranging from small one-off tools to complete application suites.