Spambouncer

The SpamBouncer is a spam filter that runs under Procmail, a Unix-based email processing program. The SpamBouncer filters and classifies your incoming email, moving spam to a separate folder or deleting it entirely. This allows you to find your real email without having to read through a flood... Platforms: *nix

SpamStrainer is a filter, that recognizes your emails, you did not ask for and marks them as spam, so that your regular email client can make apply a filter rule on this email. Most of the filtering software for spam mails is based on predefined rules and have to be updated in repeated cycles... Platforms: Mac

Deep Six is a client side spam filtering tool that monitors your inbox for new email and filters it. The modular filter plugin-system allows for greater spam detection. Currently supports SpamBouncer, Vipul's Razor and DCC. Platforms: Windows, Mac, Linux