Top 10 Open Source Bug Tracking System系统

Bugzilla http://www.bugzilla.org/

Mantis

php

http://www.mantisbt.org/

Trac

Python

also provides wiki

http://trac.edgewall.org/

Redmine

http://www.redmine.org/

Request Tracker

http://bestpractical.com/rt/

OTRS

Home Page: http://otrs.org/

EventNum

This was developed by the MySQL team, and written in PHP.

Home Page: https://launchpad.net/eventum/

Fossil

Fossil is written in C, and uses SQLite database.

Home Page: http://www.fossil-scm.org

The Bug Genie

Bug genie is written in PHP.

Home Page: http://www.thebuggenie.com/

WebIssues

WebIssue is written in PHP, and uses MySQL database for the server side. Everything in this top 10 list is web based bug tracking system except WebIssues.

Home Page: http://webissues.mimec.org/

其它：

I would recommend Flyspray. It is small, easy to use/install, uses PHP.

http://flyspray.org/

参考：

http://www.thegeekstuff.com/2010/08/bug-tracking-system