The 1.1.0.164 version of zenplot is available as a free download on our website. The program is categorized as Office Tools. The actual developer of the program is ADDINSOFT INC.
From the developer:
ZENPLOT, the data visualization software dedicated to advanced graphics
ZENPLOT allows you to create impactful visualizations by stacking different graphic layers (histograms, scatterplots, line charts, bar charts, heatmap / 2D surface, area chart, labels, annotations, axis, legend etc.). The data can be linked to any characteristic of the different layers (color, shapes, etc.).
You may want to check out more software, such as Textaizer, DocScan Pro or Citeknet CHM IFilter, which might be similar to zenplot.