Downloads from SpamAnti.net

The best (free) tools against SPAM

POPfile: a personal filter software whose installation for Windows is very easy (A Linux version is also available) and that uses the excellent Bayesian filter technique.
K9: a personal filter for Windows (uses a excellent Bayesian filter).
Thunderbird, the email reader that comes from Mozilla (it goes with the Firefox web browser).
Pegasus mail: a mail reader powerful, flexible, really FREE and available in English and in German.
Sam Spade (with the excellent Sam Spade for Windows).

Some other tools (still free)

Usually, I do not advise using scripts to protect e-mail addresses you may publish on your web site. However, J.M.Rosengard script seems more robust than many others.
See also: http://w2.syronex.com/jmr/spam.html
Internet JUNKBUSTER: a free software to kill ad banners.

Tools specifically for servers (free again)

I am less satisfied with the choice I need to make in this category but my preference still goes to:

SpamAssassin, mainly because of the variety of strategies it allows (notice that commercial products from Kerio also include SpamAssassin).

The encyclopédie du courrier électronique et du SPAM

The encyclopédie du courrier électronique et du SPAM (encyclopaedia of electronic mail and SPAM) is written in French, listed in alphabetic order. It defines words, lists products, technologies, etc. and gives some useful advice. But in French!

Encyclopédie du courrier électronique et du SPAM :