Plesk version: Plesk 7.5.2 for Unix and later
API RPC version: all versions
Plesk user: Plesk Administrator
Plesk comes with a number of free and commercial Web applications (web-based software applications) that can be provided to resellers and clients and deployed on their domains. The applications are stored in the Application Vault in the form of installation packages. Each application package is uniquely identified by ID.
Plesk Administrator can install applications to Application Vault using a web service called APS Catalog. For more information, refer to the section Supported Operations: Managing APS Catalog and Applications.
Reseller/Client accounts can have their own Application Vault modules (for which they should buy a license), thus being able to manage their own list of packages. These users can also create their own applications and add them to the Application Vault. User's Application Vault module is called Application pool.
Operations on the Application Vault via API RPC are allowed to Plesk Administrator only.
Different versions of the same Web application are treated as different Web applications from the administrative standpoint.