Soulver 3 for Mac - A smart notepad with a built in calculator
Evaluator - A simple calculator app for macOS and Windows
Omni Calculator - Helping you make rational decisions, one calculation at a time.
Bootstrap Money - How much money can you make selling software?
Numi App - Numi is a beautiful text calculator for Mac.
Financial Toolbelt - Powerful calculators that help you improve your finances