Downloading NextPlot 1.0 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The software is included in Design & Photo Tools. This free Mac app was originally designed by tohru itoh. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
NextPlot can display a two-dimensional line graph from a data file. The tool makes it easy to enlarge or reduce the graph and change the display position. You can select data to display the graph from the data file and change the display order of the graph. The scale value of the graph is set automatically, so there is no need for troublesome setting etc. However, it is not possible to display multiple data on one graph.
You may want to check out more Mac applications, such as Smith Chart for Mac, TVPaint Animation or Keynote Action Pack, which might be similar to NextPlot.