RT is an industrial-grade trouble ticketing system. It lets a group of people intelligently and efficiently manage requests submitted by a community of users. RT is used by systems administrators, customer support staffs, NOCs, developers, and even marketing departments to track issues, outages, bugs, requests, and all kinds of other things at thousands of sites around the world.
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.
Depends is an embeddable, generic dependency tracker library for C++. The Depends class implements a complete dependency tracker and an associative container for any given value-type. It can be used as-is without any real knowledge of how it is implemented, although extensive documentation of the implementation is included and can increase productivity.
Beeswax is an information management system inspired by Lotus Agenda. It aims to recreate Agenda's flexibility and efficiency in a clutter-free, text-based (ncursesw) user interface with vi key bindings. Beeswax views and reports will have specifications for sections, columns, filtering, and sorting.
aTicket is a Web based support ticket system derived from eTicket and osTicket. It enables submission of problems by email or the Web, and utilizes a flexible user tracking system based entirely on email address and ticket number. It provides powerful Web based ticket management, with multiple categories and support people.