Plugins and Modules.
Holzmann CFD uses the following plugins and modules (extensions).
• Joomla with the latest release (CMS - Base)
• JSN Air 2 Template (paid)
• JSN Page Builder (paid)
• Akeeba Backup (donated)
• VCNT Visitorcounter (donated)
• Instant PayPal Pro Shop (paid)
Based on the Open Source thought and a fair play. Holzmann CFD likes to mention this extensions.