5pm is a Web-based project and task management software.

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

buckets.co helps you optimize workflows & collaboration at all levels.

Clockingit is a project management, collaboration and time tracking tool.

Visual Tickets is a revolutionary tracking tool for project communication: bug tracking, request management, feedback gathering.

GitHub is a web-based Git or version control service.

Avaza is a beautiful online software suite with modules for Project Management, Timesheets, Expenses & Invoicing. Access from anywhere, with any device.

Basecamp is a project management web app.

Bugzilla is a web-based general-purpose bugtracker and testing tool.

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.

Hive.com is a productivity platform with powerful project management features.