InstaCalc: Welcome to a fast, easy and shareable calculator

InstaCalcBrand new. InstaCalc. Just like the name says, it’s an instant making use of AJAX. No need to hit “enter”. Your results are written as you type, just like any other AJAX application. You can set a number of rows and even set variables and use them similar to Excel. One neat feature is that it understands words like “thousand”, “million”, etc.

You can even define a calculator and then embed it into an HTML page. Give it a try. InstaCalc Preview

Source: TechCrunch