Symantec plans to buy AppStream, a seller of software that is used to deliver applications to the corporate desktop on demand.

Symantec has been selling the AppStream software with its Software Virtualization Solution (SVS) Pro product since 2006, and the acquisition will help the company compete with products such as Microsoft's SoftGrid and the Thinstall Virtualization Suite.

AppStream's software manages desktop applications from a central server, delivering only the components that the user needs while at the same time making it easier for IT staff to manage the software.

The acquisition is expected to close by the end of June. Terms of the deal were not disclosed.