Downloading Plot2 Pro 2.8 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. Plot2 Pro for Mac belongs to Productivity Tools. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
Plot is a scientific 2D plotting program.
This project started in 1993 with SciPlot on NeXTStep and continues with "Plot" for OS X till 2007.
With buying the Pro version of Plot you will help to keep Plot alive and you get some extra color schemes.
Plot is designed for everyday plotting, it is easy to use, it creates high quality plots, and it allows easy and powerful manipulations and calculations of data.
You may want to check out more software for Mac, such as RiffMaster Pro, Sequel Pro or WASEL Pro, which might be similar to Plot2 Pro.