JReviews:Add-on Development
From JReviews Documentation
Add-on development requires a basic understanding of PHP and MySQL.
What are add-ons and what can I do with them?
JReviews add-ons can extend the core functionality without the need to modify code in the JReviews core. Add-ons can have administration settings and management functionality, similar to the ones found in GeoMaps, PaidListings and the WidgetFactory. They can have their own front-end menus to create new pages on your site. They can intercept database query requests and modify or extend the results of queries and they can also modify any variable that is sent to a view before the view is rendered.