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.
bz2gnats is responsible for getting bugs from the Bugzilla database and changing their format to a text format so that the bugs may be used in a GNATS database. It leaves room for changes such as adding or deleting fields and it allows the ability to include all or some fields from Bugzilla.