Stylish to-do list with built-in productivity timer

https://github.com/JMoerman/Go-For-It

Go programming language

http://golang.org

Generate interface introspection data for GObject libraries

https://gi.readthedocs.io/en/latest/

OCR (Optical Character Recognition) program

http://jocr.sourceforge.net/

GLib/GTK+ set of document centric objects and utilities

http://live.gnome.org/libgoffice

Go font family

https://blog.golang.org/go-fonts

Monospace bitmap font well suited for programming and terminal use

http://font.gohu.org/

GObject Data Mapper

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

Canvas widget for GTK+

http://sourceforge.net/projects/goocanvas

Collection of freely redistributable TrueType fonts from Google

https://fonts.google.com/

Fast, multi-threaded malloc() and nifty performance analysis tools

https://github.com/gperftools/gperftools

Script to analyze web server and generate Google Sitemap files

http://code.google.com/p/sitemap-generators/

Library for writing and using C++ mock classes

https://github.com/google/googlemock

Google Search, Google Site Search, Google News from the terminal

https://github.com/jarun/googler

Framework for writing C++ tests on a variety of platforms

https://github.com/google/googletest

Visual effects library

http://sourceforge.net/projects/goom

Remake of the 8 bit classic game 'The Goonies'

https://goonies.jorito.net/

Graphical Object Relationship Modeller

http://www.gnustep.org/experience/Gorm.html

Commandline text rendering utility - creates images from text

http://linuxbrit.co.uk/gozer/

Gpac MPEG-4 Systems library and headers

http://gpac.sourceforge.net/

Generates perfect hash functions for sets of keywords

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

Library to make access to GnuPG easier

http://www.gnupg.org/related_software/gpgme/

Daemon that monitors one or more GPSes attached to a host computer

https://gpsd.gitlab.io/gpsd/index.html

Firmware modules for the drm-kmod drivers

https://github.com/freebsd/drm-kmod

Optimizations for speeding up vector operations

http://ebassi.github.io/graphene/

Rendering capabilities for complex non-Roman writing systems

http://graphite.sil.org

Graph Visualization Software from AT&T and Bell Labs

https://www.graphviz.org/

Tool for centralized log collection

https://www.graylog.org/

Gtk and xfwm4 themes for the Xfce Desktop

https://github.com/shimmerproject/Greybird

Framework focused on making media discovery and browsing

https://wiki.gnome.org/Grilo

Plugins for net/grilo

https://wiki.gnome.org/Grilo

Software typesetting package

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

Agile dynamic language for the JVM

http://www.groovy-lang.org/

Grub-emu loader for bhyve

https://github.com/grehan-freebsd/grub2-bhyve

Virtual 3D Rubiks cube for GNUstep

GNU SASL command-line utility

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

GNUstep-aware scheme interpreter

http://www.gnustep.it/marko/GScheme/index.html

GNU stream editor

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

Collection of globally shared GSetting schemas

Standard fonts for Ghostscript

http://www.cs.wisc.edu/~ghost/doc/gnu/index.htm

Shisen-sho puzzle game for GNUstep

http://gap.nongnu.org/gshisen/index.html

GNUstep Keyboard Grabber

The GNU Scientific Library - mathematical libs

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

Audio converter and library for converting u-law to gsm encoding

http://kbs.cs.tu-berlin.de/~jutta/toast.html

GObject library for playing system sounds

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

Postscript and Pdf Viewer for GNUstep

http://gap.nongnu.org/gspdf/index.html

Spell checking for GTK+

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

Development framework for creating media applications

http://gstreamer.sourceforge.net/

GStreamer plug-in for manipulating MPEG video streams

https://gstreamer.freedesktop.org/

GStreamer written collection of plugins handling several media types

http://gstreamer.sourceforge.net/