Bugfender - Cloud logging for your apps, not only crashes matter
Chrome Mobile DevTools - Mobile Debugging Tools
Rollout - Fix or prevent critical bugs while your app is live.
Xcode - Xcode is Apple’s powerful integrated development environment for creating great apps for Mac, iPhone, and iPad. Xcode 4 includes the Xcode IDE, instruments, iOS Simulator, and the latest Mac OS X and iOS SDKs.
FBSonar - Sonar is a platform for debugging mobile apps on iOS and Android.
Flipboard FLEX - At Flipboard, we place a high value on tools that speed up and improve the development process.