This is an IP Subnet Calculator for IPv4/v6 which calculates the subnets.

IPv4 to IPv6. Quick classification and dissection 

LanCalculator calculates subnet addresses and masks.

Lan Calculator is quick 

Statistics Calculator is an indispensable tool for report writers.

writers who need a quick test to compare 

Designed to provide a simple and quick mean to calculate cooler/freezer loads.

KeepRite Refrigeration's Free Calc-Rite Load Calculation...with a simple and quick means of calculating 

PsychroCalc is the most versatile and easy to use psychrometric property tool.

windows to allow quick access 

Forget your start menu - launch applications with just a few keystrokes!

finds it - enter e.g. 'calc' to open 

With SciCalc you can perform your calculations easily and with pleasure.

ever wanted to quick calculate 1.7 1/3%, or log2 

It develops voltage-drop calculations on fire alarm control panel circuits.

HPP-Calc provides a quick and efficient 

FormCalc lets you create different sets of calculations for different forms.

FormCalc™ lets you do calculations in any QuickBooks form where Items are used. FormCalc lets you create different sets of calculations for different forms 

Small application to provide quick keyboard access to Windows calculator.

application that provides quick access...and Exit. The quick access