where can I find RealSystem Server product for Windows servers

Use the following guide

Manual Chapter : Dynamic Ratio Load Balancing

Installing the monitor plug-in on a RealSystem server system (Windows version)

This task installs the monitor plug-in on a RealSystem Server system (Windows version).

1. Download the monitor plug-in F5RealServerPlugin.dll from the BIG-IP system.
2. The plug-in is located in the folder /usr/local/www/docs/agents.
3. Copy F5RealServerPlugin.dll to the RealServer plug-ins directory. (For example, C:\Program Files\RealServer\plug-ins.)
4. If the RealSystem Server process is running, restart it.

You can also click the About tab in the Web Configuration utility, and click Plugins

Thank you for you quick answer, this for the plug-ins but How I get as well the (RealSystem server system )application

is it available on F5 download portal

thanks

Thank you