Average App Store Review Times This site tracks the average App Store review times for both the iOS and the Mac App Store using data crowdsourced from iOS and Mac developers on Twitter.
Shortcat – Keyboard productivity app for Mac OS X onethingwell : Shortcat is a keyboard tool for Mac OS X that lets you “click” buttons and control your apps with a few keystrokes. Think of it as Spotlight for the user interface. Shortcat leverages the Accessibility API, which is supported by all applications that come with Mac OS X and most applications.
HockeyApp – Perfect. Your. Apps. HockeyApp is the best way to distribute your betas and collect live crash reports for beta and release apps on Mac OS X, iOS and Android.
Xcode, GCC, and Homebrew Command Line Tools for Xcode: This package enables UNIX-style development via Terminal by installing command line developer tools, as well as Mac OS X SDK frameworks and headers.
Network Link Conditioner in Lion » Matt Legend Gemmell Extremely handy for simulating less than optimal network conditions while testing an app.