GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
TrackJS JavaScript Error Logging - JavaScript Error Monitoring from TrackJS gives you context about what's happening in your end-users' browsers.
Redmine - Flexible project management web application
Rollbar - Rollbar collects errors that happen in your application, notifies you, and analyzes them so you can debug and fix them. Ruby, Python, PHP, Node.js, JavaScript, and Flash libraries available.
Mantis Bug Tracker - Mantis Bug Tracker is a free and open source, web-based bug tracking system.
CatchJS - Unbloated, yet feature rich. CatchJS provides JavaScript Error Tracking the way it should be.