1)   Tech-FAQ.com Subnet Calculator 1.0
Subnet calculator for Microsoft Windows with support for CIDR (Classless Internet Domain Routing) and wildcard masks.
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 2)   Advanced IP Address Calculator 1.1
It is a freeware Windows 95/98/NT/2000/XP utility that lets you to calculate every aspect of your subnet configuration in a few mouse clicks! It was designed for any network engineer who needs a fast way to determine subnets.
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 3)   Advanced Subnet Calculator 9.1
Free Subnet Calculator tool from SolarWinds generates all subnets with real-time DNS, PING and CIDR tests. This application provides address details, a classful subnet creator, a CIDR calculator and subnet address lists that can be exported.
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