Direct Rendering Manager library and headers

https://dri.freedesktop.org/

Alsa compatibility library to build DSSI

http://www.smbolton.com/linux.html

Quasar DV codec (libdv) is a software codec for DV video

https://libdv.sourceforge.net/

Portable abstraction library for DVD decryption

https://www.videolan.org/developers/libdvdcss.html

Videolan version of the libdvdnav project

https://www.videolan.org/developers/libdvdnav.html

MPlayer version of the libdvdread project

https://www.videolan.org/developers/libdvdnav.html

Command line editor library

https://thrysoee.dk/editline/

Enhanced Metafile Library

https://libemf.sourceforge.net/

Small epoll implementation using kqueue

https://github.com/jiixyj/epoll-shim

Library to handle OpenGL function pointer management

https://github.com/anholt/libepoxy

Liberation fonts from Red Hat to replace MS TTF fonts

https://github.com/liberationfonts/liberation-fonts

Full-featured and high-performance event loop library

http://software.schmorp.de/pkg/libev.html

Linux Event Device library

https://www.freedesktop.org/wiki/Software/libevdev/

API for executing callback functions on events or timeouts

https://libevent.org/

Library for inspecting program's backtrace

http://www.gnu.org/software/libc/manual/html_node/Backtraces.html

Library to read digital camera file meta-data

https://libexif.github.io/

Application library for the Xfce desktop environment

https://www.xfce.org/

Video encoding library

https://fame.sourceforge.net/

Foreign Function Interface

https://sourceware.org/libffi/

The fontenc Library

https://www.x.org/

Library routines for working with Flashpix images

https://www.i3a.org/

General purpose crypto library based on code used in GnuPG

https://www.gnupg.org/software/libgcrypt/index.html

GDI+ API for System.Windows.Forms in Mono

https://www.mono-project.com/docs/gui/libgdiplus/

GObject collection library

https://wiki.gnome.org/Projects/Libgee

The GGZ Gaming Zone - Base Library

http://www.ggzgamingzone.org/

Portable, pure C implementation of the Git core

https://libgit2.github.com/

Library providing su and sudo functionality

http://www.gnu.org/non-gnu/gksu/

GNOME glade library

Collection of video game music emulators

https://bitbucket.org/mpyne/game-music-emu

Libraries for GNOME, a GNU desktop environment

http://www.gnome.org/

Program that keeps passwords and other secrets

Graphics library for GNOME

Support library for gnome cups admistration

http://www.gnome.org/

GNOME keyboard shared library

Gnome print support library

http://www.gnome.org/projects/gnome-print/

Programming reference for print/libgnomeprint

http://www.gnome.org/projects/gnome-print/

C++ bindings for the GNOME print support library

Gnome print support library

http://www.gnome.org/projects/gnome-print/

Common error values for all GnuPG components

https://www.gnupg.org/software/libgpg-error/

Universal digital camera control library

http://www.gphoto.org/proj/libgphoto2/

Extensible i/o abstraction for dealing with structured file formats

http://www.gnumeric.org

Lightweight HTML rendering/printing/editing engine

http://www.gnome.org/

GNOME top library

https://gitlab.gnome.org/GNOME/libgtop

GObject bindings for libudev

GObject based library for rendering XPS documents

https://wiki.gnome.org/action/show/Projects/libgxps

Implementation of the IETF Calendaring and Scheduling protocols

https://github.com/libical

Character set conversion library

https://www.gnu.org/software/libiconv/

ID3 tag manipulation library

https://www.underbit.com/products/mad/ https://codeberg.org/tenacityteam/libid3tag

Internationalized Domain Names command line tool

https://www.gnu.org/software/libidn/

Implementation of IDNA2008 internationalized domain names

https://www.gnu.org/software/libidn/#libidn2 https://gitlab.com/libidn/libidn2