OpenJDK 7 for OS X Lion is a solution designed for Java enthusiasts and developers who are running OS X Lion on their Apple Mac. It is based on OpenJDK sources and requires installation of Apple Java JDK 1.6. It is installed as a developer version in the /Library/Java/JavaVirtualMachines directory. This version of OpenJDK includes bug patches.
Blinged JSON Validator is a free app to validate JSON files with syntax highlighting, whitespace indentation, error messaging, and hotkeys.