Recent News
SNAP Version 2.5.7 Released
July, 17, 2017
AptPlot 6.7.3 Released
March 28, 2017
PyPost 1.2.3 Released
July 13, 2016
AptPlot Resources

AptPlot - A Free Pure-Java 2D Plotting Tool

AptPlot is a free WYSIWYG 2D plotting tool designed for creating production quality plots of numerical data and performing data analysis. AptPlot contains extensive scripting and GUI support for the manipulation and analysis of data sets. AptPlot is intended to be a pure-Java drop-in replacement for the the Motif X-Window based Grace plotting package maintained by the Grace Team and coordinated by Evgeny Stambulchik.

Download AptPlot

PyPost is now included with the AptPlot distribution for SUG members.

PyPost - A Python Postprocessor for Analysis of Code Results and Experimental Data

PyPost consists of a Python library and stand-alone Java application designed to provide advanced post-processing capability for engineering analysis codes and experimental data results. PyPost is licensed to SNAP User's Group (SUG) members.

AptPlot Overview

Read an overview of the AptPlot application and its features. A brief history of AptPlot is also presented.


AptPlot is released under the GPL. Read the license and the licenses of included technologies.

Change Log

ACS Plug-in 2.1.3 - released July 13, 2017:

  • An issue was resolved for TRACE plot file import where plots could not be generated for more than one plot file if the data channels differed between the files.
  • Axial plotting routines for TRACE have been updated to perform a linear interpolation when the requested plot time falls between two time steps.

AptPlot 6.7.3 / ACS Plug-in 2.1.2 - released March 28, 2017:

  • The channel selection dialogs for TRACE, FRAPCON, FRAPTRAN and COBRA were updated to allow the channel name filters to optionally include or exclude the channel description text.
  • Updated engineering units for COBRA plot files.