Scientific/engineering firmware repurposing HP business calculators!
Pure Java Network Tools
End User Tools for Windows.
Electronic paper for computations and graphs
financial, statistics, scientific and programmers calculator
A simple molecular weight calculator
RxCalc is a calculator for the analysis of multi-stage receiver.
galculator is a scientific calculator in algebraic mode and RPN
its a simple android calculator.its good for beginner android learner
Physical Expression Calculator