Science, Technology, and Engineering Applications
What .. you thought Ubuntu was just for play? Also see Ubuntu Science.
VistA (Enterprise Electronic Health Record)
OpenVistA and WorldVistA are two varieties of the largest and most robust CCHIT-approved electronic health record platform in the public domain. They are GPL licensed, are based on the US Veterans Administration health record system, and can be installed as an integrated database, server, and client system. See the detailed download and installation instructions for OpenVistA and WorldVistA, or visit Vistapedia for other instructions. Also see the Ultimate Server with OpenVistA EHR.
- QCAD is a commercial CAD alternative to AutoCAD with a community open source edition. Install:
sudo apt-get install qcad
- VariCAD is a commercial 3D CAD package for multiple platforms (including Linux). There is no open source or community version.
Scilab, Octave, and Freemat are three open source solutions for solving complex mathematical equations.
Gnu Octave is a free, open source (GPL licensed) platform for solving linear and non-linear equations, similar to (and mostly compatible with) Matlab. It interfaces well with Gnuplot. For troubleshooting tips, see this thread. Install:
sudo apt-get install octave3.0
sudo apt-get install libatlas3gf-base gnuplot qtoctave
Note: QTOctave is a GUI for Gnuplot or Easyplot 1.1, and and the ATLAS library is an algebra-software-optimization set of utilities.
An older GUI for Octave/Gnuplot is qgfe (available as the package qgfe).
Freemat is a free, open source (GPL licensed) platform for solving linear and non-linear equations, similar to (and mostly compatible with) Matlab. Install from Add/Remove Programs (Edutainment) or
sudo apt-get install freemat
Amateur Radio applications
Fldigi is a free, open-source (GPL) application for digital-mode amateur radio communications using a sound card. Enable "Community Maintained Software (universe)" in Software Sources; then install either from Add/Remove Programs under (Amateur Radio) or by typing
sudo apt-get install fldigi
Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It's intended for artists, designers, and hobbyists interested in creating interactive objects or environments. See this tutorial.