Latex Related Free Software Sites

• http://www.miktex.org
  (free Latex2e software)
• http://www.ctan.org
  (Comprehensive Tex Archive Network)
• http://www.tug.org
  (Tex Users Group)
• http://www.tex.ac.uk
  (UK Tex Archive)
• http://publish.aps.org/revtex4/
  (APS RevTex4)