ATCalc is a free software calculator, that includes professional functions and has a well-developed interface. It has everything that is necessary to calculate all kinds of things, be it statistics, solving functions or operations with matrices.
The program has a somewhat complex interface, despite being very well ordered, that requires to have some knowledge of advanced maths and computing to be able to make the most of it. Each one of the tabs of the main window will take you to different calculation modes.
- Formula programming environment.
- Function representation viewer.
- Support to calculate dates and times.
- Option to export the graphics created to BMP, PNG, GIF, JPG, EMF and SVG.
If you are looking for a calculator that offers your professional features and options, and that can cover any king of operation, with the added bonus of being free, you should take ATCalc into account.