Free accurate software for mac

ORSA is an interactive tool for scientific grade Celestial Mechanics computations. Asteroids, comets, Solar, and extra-Solar planetary systems can be accurately reproduced, simulated, and analyzed.
Features: - accurate numerical algorithms - use of JPL ephemeris files for accurate planets positions - Qt-based graphical user interface - advanced 2D plotting tool and 3D OpenGL viewer - import asteroids and comets from all the known databases (MPC, JPL, Lowell, AstDyS, and NEODyS) - integrated download tool to update databases - stand alone numerical library liborsa - save and restore session from a single file
Main features:
- accurate numerical algorithms
- use of JPL ephemeris files for accurate planets positions
- Qt-based graphical user interface
- advanced 2D plotting tool and 3D OpenGL viewer
- import asteroids and comets from all the known databases (MPC, JPL, Lowell, AstDyS, and NEODyS)
- integrated download tool to update databases
- stand alone numerical library liborsa
- save and restore session from a single file.
Enhancements:
- 2 different installer version - one with datafiles (61Mb), one without the datfiles (12.5Mb).

Space Combat 1.40a is a game in which laws of physics are used to your vehicle. You enter the spaceship mass, size, and thruster and engine powers and locations and see how the resulting ship handles... with the physics being accurate. Take the ship though gates projected on a HUD, or asteroids or comets to test your manueverability and flying skills.

Econ Calculator 1.1.1 is an accurate and reliable calculator which has settings to make both single auto calculations or multiple calculations.

Econ Calculator still keeps things simple but also has the addition of a few more options such as a more appealing user interface, having multiple calculations written into a simulated paper roll at the bottom of the calculator which can be saved as a text file or printed out from the "Print" menu. Calculations possible include addition, subtraction, division, multiplication and square root. Contextual menu for Copy and Paste functions. This is an ideal replacement calculator for your computer.

English, Spanish, French and Italian versions are available.

Salat Widget provides local Islamic prayer times that automatically update each day.
Times are calculated for your locale using an approved calculation method.
Of course, no calculation is a substitute for actually looking outside, and this widget may not have accurate times for every location (especially at extremely high or low latitudes), so you need to verify the accuracy for your location and adjust accordingly.

Enhancements
- Completely new (and simplified) configuration page.
- Support for customizable Isha angle.

ColourUtility allows you to convert one type of colour information to another. It can convert between Web/Hex, RGB, Integer and CMYK.
In addition it also provides a standard Apple colour picker from where you can pick any arbitrary colour from the colour wheel (or use the magnifying tool to grab a colour from anywhere on your screen) and get its values.
If you are involved in prepress or graphic design you can load your preferred CMYK ICC profile to get more accurate CMYK conversions.
Enhancements:
- Compatible with Intel based Macs.
- Closing the window now quits the application.

SciCalc 1.02 is an accurate and reliable calculator for Mac OS X. Includes trig and log functions, fractions, 15+2 digits and 5 memories. Also has a unique "full expression" view and natural expression entry.

Net Chronometer will synchronize the date and time of your Macintosh with a highly accurate network time server over the internet.

You can even set up NetChronometer to synchronize with the time server periodically, for unattended operation.