Linear - Streamlined issue tracking for software teams
Sifter - Sifter is designed to be a simple bug and issue tracker for small teams and works especially great for teams with non-technical folks involved.
Atlassian JIRA - Atlassian JIRA is a project management and tracking software for the business users, developers, programmers, etc.
Instabug - The top apps in the world rely on Instabug for beta testing, user engagement and crash reporting.
Buglife - Seriously awesome bug reporting for iOS apps
ZenHub - ZenHub is how the world's best software teams work together. Trusted by NASA, Docker, and Rackspace. Start free today!