FogBugz is great bug tracking and project management software. But it is not free and non-open source. Is there a good enough, open-source and free application, which can be used as replacement to FogBugz?
Actually, I like EBS (Evidence-based Scheduling) feature in FogBugz. Are there good trackers with this feature?
There is Bugzilla, which is an open source issue tracking system.
Here is a more extensive list
http://en.wikipedia.org/wiki/Comparison_of_issue-tracking_systems