org.civicoop.civirules

Native CiviCRM extension CiviRules

A cookbook on what this extension could be used for: http://wiki.civicrm.org/confluence/display/CRMDOC/CiviRules+Cookbook

More technical details and tutorials how to create your own stuff: http://wiki.civicrm.org/confluence/display/CRMDOC/CiviRules+-+how+to+make+your+own