SpamBurner

From SpamBurner:

SpamBurner utilizes an amazingly simple concept -- the same one any human does! It recognizes the spam! It doesn't rely on external lists of known spammers (they're not complete), and it makes it possible for the user to tweak the spam recognition process very easily.

However, SpamBurner is much more than a spam filtering tool, it is also a great e-mail reader, which can help protect you from e-mail based viruses as well (as it allows viewing of messages in text form, even if the message has complex HTML and Javascript coding! SpamBurner strips it down, and makes it readable -- plus, if you have Microsoft's Outlook or Outlook Express installed on your system, you can conveniently open the message with Microsoft's e-mail viewer from within SpamBurner if you want to see the HTML code, pictures, etc... without having to download the message into your e-mail program's inbox! ...so if it's spam, it won't even have a chance to clutter up your e-mail.)