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.
Cleverbox provides an interactive command line shell dedicated to the deployment and maintenance of Trac and Subversion instances. It can handle multiple configuration profiles, enabling the deployment of differently flavored types of projects (Trac configuration and permissions, Apache configuration templates, etc). The project's main objective is to make your life as simple as possible. Thus, it comes with easy installation, easy upgrades, and a comprehensive documentation.
pretrace is a preload library that allows specified (dynamically linked) applications to always be executed under a debugging environment. pretrace allows you to specify the percentage of invocations which will be traced, to help you "keep an eye" on applications without bringing the machine to its knees.
BATTS (Barnhard Associates Trouble Ticketing System) is a lean, elegant trouble ticket system with both command line and Web interfaces, written in Perl. It uses MySQL for its backend, and has a ticket-via-email interface for submission and informational logging. Features include support for tickets pending on or resolved when other tickets are disposed of, an ability to assign tickets to a person, an ability to categorize and prioritize tickets, and associating billing codes with various logging events.