UltimaCalc

The Ultimate Algebraic Graphing Calculator

UltimaCalc is a highly functional graphing calculator designed to offer the ultimate balance of power and convenience.

With a brand new algebra module, you can perform manipulations on basic and complex algebraic expressions. UltimaCalc lets you do calculus: differentiate an expression, find its integral, or ask how the integral was found. You can factorise polynomials, divide one polynomial by another, find the GCD of two polynomials, or factorise a single-variable polynomial with numerical coefficients.

But that's not all:

UltimaCalc lets you calculate standard deviations and other statistics, fit lines or curves to your data, find the values of variables that minimise an expression, plot functions, find the roots of polynomials, solve simultaneous linear and non-linear equations, plot functions, solve triangles, and even create graphs and charts.

Even with all this functionality, UltimaCalc is designed for usability. The main window is small and resizeable, so you can leave it open all the time, on top of other windows, ready and waiting for use. You can hide the title bar, and even make the window transparent when it is inactive, so you can read a document underneath it.