Wolfram Research Mathematica 6.0.3
If you’re doing anything technical, think Mathematica–not just for computation but for modeling, simulation, visualization, development, documentation, and deployment.
Why Mathematica? Because this one integrated software system delivers unprecedented workflow, coherence, reliability, and innovation. Rather than requiring different toolkits for different jobs, Mathematica has been built from its inception to deliver one vision: the ultimate technical computing environment.
Download Wolfram Research Mathematica 6.0.3:
http://rapidshare.com/files/129072614/Wolfram_Research_Mathematica_v6.0.3.rar
