- Plesk for Linux
Unable to buy Developer pack extension:
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"Web Pro" or "Web Host" license edition is installed.
Developer Pack is provided for free in "Web Pro" and "Web Host" license editions. It is paid in "Web Admin" edition only.
Developer Pack gives the ability to install and use PostgreSQL, MSSQL and Tomcat: just install these components at Tools & Settings > Updates and Upgrades > Add and Remove Product Components.
Note: MSSQL databases management is not available for Linux.