Lean Testing is a free bug tracker and test case management software for high performance development teams.

Axosoft (formerly OnTime) is a proprietary project management and bug tracking system, available as hosted or on-premises software.

VisionProject is a Project Management Software that enables you to manage projects in an efficient way, saving you time and money.

SprintGround is a free task management for small software development teams and freelancers.

Flyspray is a lightweight, web-based bug tracking system written in PHP for assisting with software development and project managements.

FogBugz is an integrated web-based project management system featuring bug/issue tracking, discussion forums, wikis, customer relationship management, and evi…

Marker is a visual bug reporting tool.