PCalc - PCalc is the powerful choice for scientists, engineers, students, programmers, or indeed anybody...
Bootstrap Money - How much money can you make selling software?
Numi App - Numi is a beautiful text calculator for Mac.
MAKE Book - Learn to bootstrap profitable startups the 👨🎤indie way
RealCalc Scientific Calculator - RealCalc Scientific Calculator
Omni Calculator - Helping you make rational decisions, one calculation at a time.