(Graphical Edition Released, BreezyCalc: http://breezycalc.sourceforge.net/)
Lincalc is a console calculator designed to provide a quick and simple interface to a very powerful engine. Its parser is based on muParser <http://muparser.sourceforge.net/>. It supports user-defined variables, logical operators for conditions, and a wide range of mathematical functions each calculation that is made is stored in a result variable (Ans1, Ans2..) and can be referenced in equations. It also supports evaluation of multiple equations each separated by a ','.
-- Ex. (condition) ? (true val) : (false val)
-- && (and), || (or)
-- <= (less than or equal to)
-- >= (greater than or equal to)
-- < (less than), > (greater than)
-- != (not equal to), == (equal to)
Functions: abs, exp, sqrt, avg, sum, min, max, sign, rint, ln, log10, log2, sin, sinh, asin, asinh, cos, cosh, acos, acosh, tan, tanh, acos, acosh
fast download and works, recommended.