Andrew Deak's WiFi Fast Clock software is installed on a Windows 7 or higher PC connected to your home network.  It can support up to 250 clients: Analog Displays, Digital Displays, Browsers, Tablets and Smart Phones. Connect via Ethernet or WiFi.

This software is free and you can test and use it by downloading the software and pointing browsers at it on your PC, tablet or phone. Just proceed to checkout and you will receive a link to the software.

WiFi Software Server Manual