> http://www.atlassian.com/software/jira/pricing.jsp
I have no particular opinion on whether to use a free or non-free system
to track bugs, but I'd like to recommend RT as being a very capable and
useful program. It has been used to track Perl 5 and CPAN bugs for some
time now, and it happens to be free (and it can use PostgreSQL :).
<http://www.bestpractical.com/rt/>
-- ams