IgCalc

IgCalc is a freeware scientific calculator. All functions are accessed via the right mouse button and some description of the functionality is in the help. When switching the mode, the calculator can plot graphs according to a specified formula.

Mathematical expressions are entered in a similar way to manual scientific calculators or spreadsheets (MS Excel, OO Calc, etc.). For expressions, both operators (+, -, *, /) and functions (sin, cos ...) can be used. Operators and functions have a standard precedence, which can be modified by using parentheses (if the parenthesis is not right-ended, it automatically ends at the end of the expression).

The calculator knows the important mathematical/physical constants and can calculate in different number systems (binary, octal, decimal, hexadecimal). All functions and settings of the calculator can be accessed via the right-click menu.