An open-source mail filter program with web-based tuning tool to deliver only wanted mail by using block/buddy lists and naive Bayesian statistical analysis. Gets POP3 mail. Uses php, sh, sendmail, html and javascript. Includes elaborate User Guide.
SpamWizard is a statistical spamfilter working at serverlevel. It's based on Paul Grahams essay "A Plan for Spam", and has evolved to include several other features and filtering techniques. Supports *nix platform.
A multiuser spam filter for IMAP servers using a simple statistical method. Training is done within any imap mail client. You simply move the mails into the right folders to train the tool. Can be installed server or client side. Using PHP(imap) + Mysql.