| HessianConstants | Constants related to Hessian message builder and formatter pair | code | html |
| HessianMessageBuilder | Enables a message encoded using the Hessian binary protocol to be received by axis2/synapse and this builds the HessianDataSource to represent the hessian message inside the SOAP info-set | code | html |
| HessianMessageFormatter | Enables a message encoded using the Hessian binary protocol to be written to transport by axis2/synapse and this formats the HessianDataSource to a hessian message | code | html |
| HessianUtils | Util class for writing the Hessian Fault to the output stream | code | html |