GitHub Package Registry - Your packages, at home with their code
Instabug - The top apps in the world rely on Instabug for beta testing, user engagement and crash reporting.
Slowbug - Debug you code in slow-mo!
Sonar by Facebook - Extensible mobile app debugging for iOS and Android
Buglife - Seriously awesome bug reporting for iOS apps
Remote Duck - Stranger on the Internet that can help you debug your code