Founded in late 2003 and heartquartered in France, we are **non-profit** and **independant**.

We believe in the open web, think internet services should be sustainable, build for the long term.

While we are re-launching the service, we only accept new members through invitation.

The Romans did not know anything about the binary system. They just knew that their method worked, which was good enough for them. Interestingly, electronic computers, which use binary numbers, employ a similar method!

Number spirals are very simple. To make one, we just write the non-negative integers on a ribbon and roll it up with zero at the center.

We have developed an algorithm that can produce reasonable solutions to the Escherization problem. It is based on three large components:

Quickly typeset LaTeX equation, produces PDF ready for drag-and-drop.
- multi-documents
- smart error manager
- automatic history
- included application service
- managable library
- LinkBack support

A program used to digitize scanned plots of functional data. This program will allow you to take a scanned image of a plot and quickly digitize values off the plot just by clicking the mouse on each data point. The numbers can then be saved to a text file and used where ever you need them. Plot Digitizer works with both linear and logarithmic axis scales. Besides digitizing points off of data plots, this program can be used to digitize other types of scanned data (such as scaled drawings or orthographic photos).

Python module offering solvers for Constraint Solving Problems (CSPs) over finite domains in simple and pure Python.

Fast Inverse Square Root

Math and Python hack.

Nice solution to the 4 4 puzzle.

A time determinant logarithmic progression, with a movable target and energy factor.

Delaunay triangulation software.

Matrix manipulation on Lisp.

For Mac OS X.

Nice.

Fortran sucks, aaaaahhhh!