5. Calculator Plus: Supports usual  array of features that you might expect from a scientific calculator but not as feature rich as Calc98 or Hexelon that you will see in these charts. Supports a bluish skin that some people may like.  This one is from Microsoft if you are curious.4. Moffsofts Free Calculator: It supports adjustable calculator size, when you increase or decrease window size it will automatically adjust the screen and button size etc. More importantly it ...