This plugin provides blueprints for User Stories and Sprints.
This Addon provides multiple tasks to test Chef cookbooks. It does need the chef-dk installed however, so make sure it is installed.
This add-on allows JIRA to access an external database by a custom SQL Query that is settable for each customfield. However, the Query itself is identical for each issue.
With this plugin you can easily handle page version links. You can add the version link to a page via a macro or request the current version link from the action menu.