Follow along with the video below to see how to install our site as a web app on your home screen.
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If you are still using CentOS 7.9, it's time to convert to Alma 8 with the free centos2alma tool by Plesk or Plesk Migrator. Please let us know your experiences or concerns in this thread: CentOS2Alma discussion
If you mean add it to the dropdown list on the databases page for true integration then no. It would be possible, in theory, to integrate firebird manually if you scripted your own configuration area in Plesk and added a custom button.