DataGraph is a powerful and easy to use graphing and charting application. DataGraph minimizes the fuss and frustration associated with creating clean and accurate publication quality graphs and charts. DataGraph also includes powerful function fitting and statistical analysis capabilities, which enables high quality analysis of the data. Import data from files, paste in numbers from a spreadsheet, and enter them in manually. Export graphics to files, or copy and paste into presentations. It is a great companion program for spreadsheets.
DataGraph is widely used, and the consistent user feedback is that it takes almost no time to learn how to create better graphs than in commonly used spreadsheets and statistical applications. Once you get more used to DataGraph you can create graphs in few clicks that would take a lot of tinkering and post processing in vector drawing programs.