Git extension for versioning large files

https://git-lfs.github.com/

Git "merge" driver for GNU style ChangeLog files

https://www.gnu.org/software/vc-changelog/

GNU Emacs modes for Git-related files

https://github.com/magit/git-modes

Import from and submit to Perforce repositories using git

https://git-scm.com/

Git commands for navigating and editing Git commit history

https://github.com/ridiculousfish/git-prev-next

Git command for managing subrepositories

https://github.com/ingydotnet/git-subrepo

Bidirectional operation between a Subversion repository and Git

https://git-scm.com/

Util to keep branches in sync with remotes in git

https://github.com/ctubbsii/git-sync

Assorted git-related scripts and tools

https://github.com/MestreLion/git-tools

Compact self-hosted Git service

https://gitea.io/en-US/

GTK-based git repository viewer

https://wiki.gnome.org/Apps/Gitg

GitHub Enterprise Backup Utilities

https://github.com/github/backup-utils/

Access control layer on top of git

https://github.com/sitaramc/gitolite

Access control layer on top of git

https://github.com/sitaramc/gitolite/tree/g2

Graphical interface to git repositories

https://francescmm.github.io/GitQlient/

Smart terminal helper for git projects

https://github.com/muesli/gitty

Terminal UI for git

https://github.com/extrawurst/gitui

Minimalist, dependency-free program to clone/pull Git repositories

https://github.com/johnmehr/gitup

GNOME Javascript binding

http://live.gnome.org/Gjs

Program to create labels and business cards

http://snaught.com/glabels/

User interface builder for GTK+ 3

https://glade.gnome.org/

Eclipse Jakarta EE Platform

https://projects.eclipse.org/projects/ee4j.glassfish

Reference implementation of the Java EE application server

https://glassfish.java.net/

OpenGL spinning pocket watch demo and benchmark utility

GL Tubing and Extrusion Library

http://linas.org/gle/

OpenGL Extension Wrangler Library

http://glew.sourceforge.net/

Portable framework for OpenGL development

https://www.glfw.org/

Network-related giomodules for glib

Some useful routines of C programming (current stable version)

https://www.gtk.org/

C++ interfaces for glib2

https://www.gtkmm.org/

C++ interfaces for glib2

https://www.gtkmm.org/

OpenGL image compositing library

http://freedesktop.org/Software/glitz

C++ mathematics library for software based on the OpenGL GLSL

https://glm.g-truc.net/

Library of C++ classes for flexible logging

https://github.com/google/glog

GNU Linear Programming Kit

https://www.gnu.org/software/glpk/glpk.html

OpenGL and OpenGL ES shader front end and validator

https://www.khronos.org/opengles/sdk/tools/Reference-Compiler/

GNU version of 'make' utility

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

Well-known mastermind game

http://gap.nongnu.org/gmastermind/

Library (written in C) for parsing and creating messages using MIME

http://spruce.sourceforge.net/gmime/

Library (written in C) for parsing and creating messages using MIME

http://spruce.sourceforge.net/gmime/

Well-known minesweeper game for GNUstep

http://gap.nongnu.org/gmines/

A generic matrix template library

http://home.gna.org/getfem/

Free library for arbitrary precision arithmetic

https://gmplib.org/

Gecko Media Plugins API from mozilla-release

https://wiki.mozilla.org/GeckoMediaPlugins

Gn meta build framework - standalone version

https://gn.googlesource.com/gn/

GNATS, the GNU Problem Report Management System

http://www.gnu.org/software/gnats/

Simple network library built upon Glib-2

http://www.gnetlibrary.org/

The "meta-port" of the GNOME desktop slimmed down for only the basics

Move the tiles until you obtain the 2048 tile

https://wiki.gnome.org/Apps/2048

Glib wrapper around libarchives

https://gitlab.gnome.org/GNOME/gnome-autoar