Instabug - The top apps in the world rely on Instabug for beta testing, user engagement and crash reporting.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Bird Eats Bug - Saw a bug? Send an instant replay to engineers. It will come with console logs and everything. Developers will ❤️ you.
Drag Team - The simplest way to share emails as a team.
Buglife - Seriously awesome bug reporting for iOS apps
Shake SDK - Bug and crash reporting tool for your mobile app