Our development team and product team use YouTrack from JetBrains to create user stories and track bugs. It allows you to set up priorities and categorize tasks. It has a good API, and is built with developers in mind.
Founder & CEO - Grow
Our development teams use YouTrack for bug tracking.
Co-founder & CIO - Enplug
YouTrack is an issue tracker and agile project management tool for development teams.
Visit the website: https://www.jetbrains.com/youtrack/