NethServer - NethServer is an operating system for Linux enthusiasts, designed for small offices and medium...
XAMPP - XAMPP is a free and open-source cross-platform web server that is primarily used when locally developing web applications.
ClearOS - A very good alternative for Windows Server, for free
MAMP - MAMP is the abbreviation for Macintosh, Apache, MySQL, and PHP. It is a reliable application with its four components that allows you to access the local PHP server as well as the database server (SQL).
Univention Corporate Server - Univention Corporate Server UCS with Active Directory functions and App Center is the cost-efficient and popular successor to Microsoft's server solutions.
AMPPS - MAMP and WAMP stack with Latest PHP, Apache, MySQL and Softaculous. Install and manage apps like PHP, WordPress and much more with just one click.