Workbench is free to use, but is not an official salesforce.com product. Salesforce.com support is not available for workbench. Workbench includes robust support for the force.com partner, bulk, rest, streaming, metadata, and apex apis that allows users to describe, query, manipulate, and migrate both data and.
Help workbench is not a supported product of or supported by salesforce.com, inc. Workbench has not been officially tested or documented. Workbench means the workbench suite of tools available at workbench.developerforce.com and provided by sfdc as a demonstration of the open source.