GNOME libraries

Pango (stylized as Παν語) is a text (i.e. glyph) layout engine library which works with the HarfBuzz shaping engine for displaying multi-language text.

GStreamer is a pipeline-based multimedia framework that links together a wide variety of media processing systems to complete complex workflows. For instance, GStreamer can be used to build a system that reads files in one format, processes them, and exports them in another. The formats and processes can be changed in a plug and play fashion.

graphics-related software library

thumb|Simplified software architecture of GTK, [[Pango, GDK, ATK, GIO, Cairo and GLib.]] 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.

free software PDF rendering library

HarfBuzz (loose transliteration of Persian calque harf-bāz, literally "open type") is an open-source text shaping engine written in C++. Text shaping is the process of converting a sequence of Unicode code points into the correct glyph identifiers and precise positions needed to render text on screen or in print. For scripts where characters change shape depending on their neighbours (such as Arabic, Devanagari, or Tamil), text shaping ensures that the right glyph forms are selected and joined correctly. Without it, text renderers would display raw disconnected code points rather than readable

The GLib Object System, or GObject, is a free software library providing a portable object system and transparent cross-language interoperability. GObject is designed for use both directly in C programs to provide object-oriented C-based APIs and through bindings to other languages to provide transparent cross-language interoperability, e.g. PyGObject.

libxml2 is a software library for parsing XML documents. It is also the basis for the libxslt library which processes XSLT-1.0 stylesheets.

librsvg, (occasionally stylized as LibRsvg) is a free software SVG rendering library written as part of the GNOME project, intended to be lightweight and portable. The Linux command-line program rsvg-convert uses the library to turn SVG files into raster images.