mathematik

PHI, the golden ratio

Pi

The Pi-Search Page

wxMaxima

3 awesome free Math programs

The Definitive Four Fours Answer Key (by David A. Wheeler)

Abramowitz and Stegun: Handbook of Mathematical Functions

FractalMaker

Mandelbulb: The Unravelling of the Real 3D Mandelbrot Fractal

John Graham-Cumming: Data Visualization Disease

Multiplication is easier when it's complex

Sage: Open Source Mathematics Software

Orange - Data Mining Fruitful & Fun

pyglet 1.1.3 fails on Snow Leopard with python 2.6 snow leopards default - Cross-platform windowing and multimedia library for Python. - Google Project Hosting

Python, SymPy and Quantum Physics

pandas: powerful Python data analysis toolkit — pandas v0.4.1 documentation

StatsModels: Statistics in Python — statsmodels v0.3.0 documentation

The Julia Manual

Depth of field

XKCD plots in d3

Falling Faster than the Speed of Sound « Wolfram Blog

FriCAS - an advanced CAS

A bit of math...: Installing and using Sage just got even easier.

The Julia Language

Mental Meta 2: Every Day I’m Shuffling | Dojo Of Lies