TestRail - TestRail provides comprehensive test case management for software testing. Organize your testing, boost productivity, get real-time insights, and track progress toward milestones. Integrates with leading issue tracking and test automation tools.
iBE.net - Your Business in the Cloud
TestLink - Test & requirements management
Workzone - Workzone is a web-based project management software.
Qase - Test case management software for QA and development teams that helps you make your product better.
Xebrio - A Project Management Software to Fulfill Your Story From Requirements to Deployment.