| AbstractFormatter | Abstract class for query formatter |
| ArrayFormatter | Array formatter for Propel query format() returns a ArrayCollection of associative arrays |
| ObjectFormatter | Object formatter for Propel query format() returns a ObjectCollection of Propel model objects |
| OnDemandFormatter | Object formatter for Propel query format() returns a OnDemandCollection that hydrates objects as the use iterates on the collection This formatter consumes less memory than the ObjectFormatter, but doesn't use Instance Pool |
| SimpleArrayFormatter | Array formatter for Propel select query format() returns a ArrayCollection of associative arrays, a string, or an array |
| StatementFormatter | statement formatter for Propel query format() returns a PDO statement |