GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
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.
Redmine - Flexible project management web application
TestLink - Test & requirements management
Bugs Everywhere - Bugs Everywhere is a “distributed bugtracker”, designed to complement distributed revision control systems.
Qase - Test case management software for QA and development teams that helps you make your product better.