Open Source Links

## Some less standard links besides Ubuntu, TeX, R and Python

**Mutt**, one of two best email clients ever.
**Alpine**, the other one.
**Emacs**, where beauty meets function.
**Sage**, a very flexible python-based open source computer algebra system.
**Scilab**, very useful numerical software for mathematics similar to and better than matlab.
**Texmacs**, a very useful teaching interface for tex, octave, scilab and sage.