The best graphing program so far. It started on the Macintosh. The program has been around for decades and simply rocks. Unfortunately, Synergy software hasn't planned a linux version of their application.
Some highlights from the website:
Flexible Data Entry
Fast and Versatile Graphing Choices
Complete Control over Every Plot Option
Templates and Error Bars
Powerful Curve Fitting
Meaningful Data Analysis and Manipulation
Convenient Printing and Plot Export
