| Name | Description | Type | Package | Framework |
| Connector | Intermediates between a proton engine Connection and the I/O The top half of the engine can be access via getConnection(). | Interface | org.apache.qpid.proton.driver | Apache Qpid |
| Driver | A driver for the proton engine. | Interface | org.apache.qpid.proton.driver | Apache Qpid |
| Driver .Factory | Class | org.apache.qpid.proton.driver.Driver | Apache Qpid | |
| DriverImpl | Class | org.apache.qpid.proton.driver.impl | Apache Qpid | |
| Listener | Interface | org.apache.qpid.proton.driver | Apache Qpid | |