A plugin with common features missed in WordPress, like favicon, meta tags, adding HTML to head and footer, WordPress e-mail from header filter, etc.
Detail of the popping group on the admin bar. Mind the users and plugins shortcuts, and the W3C validator link for the current URL.
The JB Common Configuration admin section. Each option is listed as name, description, custom value and default value.
The section for viewing the JB Common log contents. If you integrate the log system with your software, you can view your outputs here.
The info admin section. A complete reference for all functions, shortcodes, widgets and features.