PCalc is Shareware program for Mac OS developed by James Thomson
PCalc is a fully featured methodical calculator with support representing hexadecimal, octal, and binary calculations. What's New: Version 2.2 also introduces a Reverse Polish Notation (RPN) mode.
GraphPaper is Shareware program for Mac OS developed by Cornerstone Designs
GraphPaper features include: Create and preserve as myriad Graph Pages as you want. Print out smooth graph pages. 3 sizes of Graph Paper - 1/4" - 3/8" - 1/2"