YouTrack - Free, online, easy-to-use, fully customizable issue tracking and agile project management tool your development team will love, by JetBrains. Our cloud or your server.
Usersnap - Usersnap is a customer feedback software for SaaS companies that need to constantly improve and grow their products.
Jira - The #1 software development tool used by agile teams. Jira Software is built for every member of your software team to plan, track, and release great software.
zipBoard - ZipBoard is a web-based visual bug tracking & issue tracking tool that helps developers, testers and project managers collaborate during website and elearning development.
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Marker.io - Visual feedback and bug reporting tool for websites