Cactus Spam Filter is a free easy-to-use spam blocker. It protects your inbox by learning to detect spam as it's being used. After a short while it has adapted to your personal mailbox and blocks out most of the junk e-mail. This spam stopper integrates seamlessly with all e-mail clients that use POP3 such as Microsoft Outlook, Microsoft Outlook Express, Netscape, Opera, Mozilla, Eudora, IncrediMail, Pegasus Mail, Foxmail and Phoenix Mail.

Command Line POP Client is a free console utility that allows you to receive your e-mails to a local directory. It is suitable for batch jobs or whenever there is a need to download e-mails as files into a folder. This mail receiver supports the POP3 protocol and is both robust and light weight. The settings are defined in an xml file. It is compatible for Windows 95, 98, Me, NT, 2000, XP and 2003.

This small console utility allows you to encrypt or decrypt a file from the command line. It uses the Tiny Encryption Algorithm (TEA) with a 128-bit key and Cipher Block Chaining (CBC).