1)   STFMath 2.1
Draw Cartesian, Parametric and Polar functions, special functions or Integral (with Average preview), analyze functions, calculate and draw integral, derivative, average, evaluate any function. Use complex and geometry calculator.

 2)   Algebrus 3.0
Scientific calculations and data analysis software. 2D and 3D graphic plots of functions and data. Calculations with vectors, matrices, tensors, complex numbers, fractions, quaternions, polynomials. Data fitting, statistics, optimization, spectrums.

 3)   Moffsoft Calculator 2.1.1
Calculator with tape, financial functions, unit conversions, date/time calculations, and product pricing. Other features include a sizeable display, fixed decimals, totals, item count, multiple memory values, tray icon, always on top, and much more.

 4)   ESBCalc Pro - Scientific Calculator 5.4
ESBCalc Pro is a Windows Scientific Calculator with Infix Notation, Exponential Notation, Printing, Brackets, Scientific Functions, Memory, Paper Trail, Result History List, Hexadecimal Conversion, Fraction Conversion and more. Register once for life

 5)   Calc98 5.3
Scientific engineering statistical and financial calculator, with conversions, constants and physical property data, a built-in periodic table of the elements, stopwatch, number base conversions, vectors, matrices and complex numbers.

 6)   UNITS32 2003.02.03
Conversions of units and currencies are done efficiently by using a single input-field. You type like you think, entering a number and the beginning of a unit, name or symbol. The assistant will automatically display the possible units.