Using additional extensions is another way of extending the functionality of your Panel. Extensions are functional components (such as a file server, firewall, or system monitor) developed by Parallels or third parties.
Parallels Extensions (only on Linux)
Parallels provides the following extensions for Panel on Linux:
If your Panel license provides extension support, you can add these extensions during Panel installation (see the section 3. Choose Panel Components). If you have not included extensions in Panel installation, you can add them to Panel at any time later in Tools & Settings > Updates and Upgrades > Add Components.
Learn how to configure and use extensions developed by Parallels in the Administrator's Guide, section Using Panel Extensions (Linux).
Third-Party Additional Extensions
Parallels partners offer a large number of additional Panel extensions, which include antivirus protection software, advanced backup solutions, VOIP services, and much more.
To obtain add-ons developed by Parallels partners, visit our online store at http://www.parallels.com/store/plesk/partners/.
Typically, third-party extensions are delivered as packages and can be easily installed, removed, and configured directly from Panel (Extensions > Manage Extensions).
If an extension requires an additional license key, you can obtain it from Parallels as described in the section Installing Additional License Keys for Panel Add-ons. In some cases, you must obtain license keys for extensions from the extension developers.