Drupal is a free and open-source web content management framework.
Mautic is a free and open-source marketing automation tool for Content Management, Social Media, Email Marketing, and can be used for the integration of social networks, campaign management, forms, questionnaires, reports, etc.
ASP.NET is an open-source, server-side web-application framework designed for web development to produce dynamic web pages.
Plesk is a web hosting and server data centre automation software with a control panel developed for Linux and Windows-based retail hosting service providers.