Yodiz
Freemium
Yodiz is a simple but comprehensive agile tool with visual boards for Sprints, Releases, Backlog, Epics and Issue management.
Marker
Commercial
Marker is a visual bug reporting tool.
Lean Testing
Free
Lean Testing is a free bug tracker and test case management software for high performance development teams.
Compare FogBugz with alternatives
Compare Lean Testing and FogBugz and decide which is most suitable for you.