Foswiki is wiki software, supporting the editing of Web pages in an ordinary Web browser by end users. What makes Foswiki special is that it supports the embedding of active and passive macros that enhance the page content (e.g. with global or dynamic information) and allow end-users to build applications that store and process data in a structured manner.
GNA Frontdesk is a groupware application designed for customer support and bug tracking. People e-mail their messages into a threaded central repository which may be accessed via the web. The Frontdesk groupware system is written entirely in Perl and currently runs under any platform that supports perl.
FusionForge is a collaborative development environment that gathers in one single place several tools useful for development teams: communication tools (forums, mailing-lists, news, etc.); development tools (bug/patch trackers, project management, source control systems, etc.); and community tools (file releases, software categorization, Web site hosting, etc.). It is the continuation of the free software version of GForge, based on the codebase that was maintained in parallel to the proprietary GForge AS version.
GNATS is a portable incident/bug report/help request-tracking system which runs on UNIX-like operating systems. It easily handles thousands of problem reports, has been in wide use since the early 90s, and can do most of its operations over e-mail. Several front end interfaces exist, including command line, emacs, and Tcl/Tk interfaces. There are also a number of Web (CGI) interfaces written in scripting languages like Perl and Python.
Glare Bug Tracking Software provides you with the framework necessary to track revisions of software on multiple projects in an organized fashion. It allows you to create multiple project groups and then upload files associates with each project. Each file that is uploaded receives its own new mandatory version number and an optional comments section, allowing you to easily manage version control.
Issue-Tracker is a support issue tracking system. The system is written to be user-friendly and is built around a modular API to make it easy to add to if need be. It includes many features that can help customer/technical support organizations resolve issues quickly and easily. These features include things like file uploads, email parsing, unlimited users and groups, email and SMS notifications, group and user reporting, and much more.