The Bitnami Jenkins Stack provides a one-click install solution for Jenkins. It supports multiple SCM tools including CVS, Subversion and Git. It can execute Apache Ant and Apache Maven-based projects as well as arbitrary scripts. Out of the box, the Bitnami Jenkins package includes Jenkins, Apache, Tomcat, and Git.
Blinged JSON Validator is a free app to validate JSON files with syntax highlighting, whitespace indentation, error messaging, and hotkeys.