JS ADDONS: Analytics, Chat and more
TAM: The Time & Attendance Management
TVIEWER: The remote control plugin
ActualTime: the time tracking plugin for GLPI
YAGP.
Yet Another GLPI Plugin
Costs: The GLPI cost control plugin
Gapp Essentials. A Gapp GLPI companion
GLPI Reminders: first GLPI browser extension
Task'n'drop: easy task scheduling for GLPI