nonpareil 1.0.1 for Mac was available as a free download on our software library. You can set up nonpareil on Mac OS X 10.6 or later. Nonpareil for Mac lies within Productivity Tools, more precisely Calculators. The software is sometimes distributed under different names, such as "nonpareil-16c". Commonly, this program's installer has the following filename: nonpareil-16c.zip. This free Mac app was originally developed by Maciej Bartosiak. The most popular version of the program is 1.0.
From the developer:
nonpareil for OS X is set of applications that simulate some of vintage HP calculators. This application has many functions like: radix mode, trigonometric, logarithmic, etc.
nonpareil for OS X can simulate following calculators: HP-35, HP-45, HP-55, HP-80, HP-21, HP-25, etc.
You may want to check out more Mac applications, such as RubyCalc, NetCalc or RPN Calculator, which might be similar to nonpareil.