Usersnap - Usersnap is a customer feedback software for SaaS companies that need to constantly improve and grow their products.
Linear - Streamlined issue tracking for software teams
BugHerd - BugHerd: The Website Feedback Tool for Agencies
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.
Distiller - Distiller's hosted continuous integration platform takes the pain out of mobile development through automated build, test, and deployment of your iOS apps.
Marker.io - Visual feedback and bug reporting tool for websites