GD Star Rating is a WordPress plugin that allows you to set up rating and review system for posts, pages, and comments in your blog. You can set many options for displaying the rating stars, and also add widgets into the sidebars for displaying top ratings and other statistics generated by the plugin. The plugin includes advanced settings panels that will allow you to control many aspects of rating. The plugin also supports multiple ratings.
GLPI (Gestion Libre de Parc Informatique) is an information resource manager with an administration interface. You can use it to build a database with an inventory for your company (computers, software, printers, etc.). It has functions to make the daily life of the administrators easier, including a job/request tracking system with mail notification and methods to build a database with basic information about your network topology. It provides a precise inventory of all the technical resources (all their characteristics are stored in a database) and management and history of the maintenance actions and the bound procedures. It is dynamic and is directly connected to the users, who can post requests to the technicians.
GMAMEUI is a front-end for MAME on Linux. It helps the user play and configure arcade games more easily. GMAMEUI is an enhancement of GXMame, fixing a number of long-standing bugs, including adding support for SDLMame in preference over the now-obsolete X-MAME. New UI features were also added.
GNU Gadu 2 is a modular instant messaging client with a GUI written in GTK2. It currently supports Gadu-Gadu, Tlen.pl, and Jabber. It is able to load Perl scripts, dock in several window managers, play sounds, talk to other programs via a UNIX socket, send SMS messages to Polish GSM operators, automatically check for updates, and use XOSD for displaying notices.