Freeware

• Pdf 995 - Free PDF creator and editor
• MikTex - A free and popular implementation of LaTex
• TexPoint; Tex4PPT - LaTex add-ins for Powerpoint
• Open Office - An open source version of the standard office packag

Documentation and code

• Comprehensive archives
  - Software for economists hosted by Alan Isaac at American University
  
  
• Matlab
  - Very good introduction to Matlab
  - A practical introduction to Matlab
  - Matlab primer, 2nd edition
  - The Matlab Econometrics Toolbox by James P.LeSage
  - Codes for economists and econometricians (includes links for both Matlab and Gauss)
  
  
• LaTex and Scientific Word
  - Doublespacing in Scientific Word
  - Scientific Workplace survival guide
  - Creating Beamer slides with WinEdt/Miktex or Scientific Word
  - VERY GOOD Introduction to Latex programming
  - Getting Started with TeX, LaTeX, and Friends
  - Tex FAQ and manuals
  - Instruction on installing latex and Lecture package
  
  
• HTML and webpage editing
  - Getting started with HTML
  - Another good HTML start-up
  - HTML Code Tutorial