Is there any issue / bug report / project step, opensource?

i need a web tool, better if free to monitoring projects step, new idea, bug report, open issues, etc...
I need to share all of these informations with my developers / contributors.

A tool like jira [http://www.atlassian.com/software/jira/overview].

Have you used a similar tool on web?

thanks.


ANSWERS:


Redmine and Pivotal Tracker are both nice, modern options.

JIRA is free for open source projects.



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