EureKalc is a freeware in-line calculator for Mac OS X.

EureKalc is a freeware in-line calculator for Mac OS X. With EureKalc 2 you can : type any mathematical expression and get the resultmodify previous calculations and execute them again (new in v.2.0) save your calculations as re-usable scripts (new in v.2.0) define constants and variables while you are working and use them in your calculations,define your own functions, with one or more variables,manage your personal databank(s) of often used constants and functionswork on lists or sequences of numbers , to make repetitive calculations, statistical calculation and vector-calculation (new in v.2.0) present results as exportable tables (new in v.2.0) present results as exportable graphs (new in v.2.0) choose Between dot and comma as Decimal separator.