| Profiler | Profiler for Propel |
| PropelColumnTypes | Enumeration of Propel types. |
| PropelConditionalProxy | Proxy for conditional statements in a fluid interface. |
| PropelDateTime | DateTime subclass which supports serialization. |
| PropelModelPager | Implements a pager based on a ModelCriteria The code from this class heavily borrows from symfony's sfPager class |