Virtualmin - Free Open Source Control Panel

Virtualmin is a web hosting control panel for Linux systems, enabling users to manage multiple virtual hosts through a single interface. It supports Apache virtual hosts, BIND DNS domains, MySQL databases, and mailboxes with Sendmail or Postfix. 

Features:

• Domain Management: Create and manage multiple domains with independent users, mailboxes, web applications, and quotas.
• Email Management: Handle mailboxes, forwarders, autoresponders, aliases, and integrate with spam and antivirus scanning tools.
• Database Management: Manage MySQL and PostgreSQL databases, including creation, removal, export, and import of database dumps.
• Security: Implement two-factor authentication, brute force protection, and other security features.
• Backup and Cloud Integration: Schedule backups and integrate with cloud storage providers like Amazon S3.
• Script Installer: Easily install web applications such as WordPress, Joomla, and Drupal.

Pros

• Cost-Effective: The GPL version is free, and the Pro version is competitively priced.
• Comprehensive Management: Manage various server components without extensive command-line knowledge.
• Mobile Access: Access and manage servers via mobile devices.
• Easy Setup: Simplified installation process.
• Built-in Website Builder: Create websites without third-party plugins.

Cons

• User Interface: The interface may be less intuitive compared to some competitors.
• Learning Curve: Some users may find it challenging to navigate due to non-standard terminology.
• Support: GPL users have limited access to support, relying mainly on community forums.

Price Details

Virtualmin is available in two versions:

• Virtualmin GPL: A free, open-source version under the GNU General Public License. It offers core functionalities but lacks some advanced features found in the Pro version. 
• Virtualmin Pro: A commercial version that includes additional features such as script installers, reseller accounts, an improved user interface, mobile access, and enhanced security measures like spam and virus filtering. It also provides professional support and access to a repository of updated packages.