Cactus Spam Filter   
http://www.codeode.com

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. Since the filter becomes personal, spammers will not be able to fool it. Installation is very simple. No setup is required in your e-mail client; this spam stopper integrates seamlessly with all e-mail clients that use POP3. It has been successfully tested with Microsoft Outlook, Microsoft Outlook Express, Netscape, Opera, Mozilla, Mozilla Thunderbird, Eudora, Pegasus Mail, IncrediMail, Foxmail, POP Peeper, Command Line POP Client and Phoenix Mail. This anti-spam program learns to detect spam as it's being used, and believe me, Cactus Spam Filter is a fast learner. After a few e-mails it will start to make its own decisions to relieve you from the spam burden. Even though this is a brutal, merciless spam killer, no e-mails will get lost unless you delete them. One of the unique features of Cactus Spam Filter is the ease of use. After you have downloaded and installed it no more settings are required! No account setup, no POP proxies, nothing! Just start your favorite e-mail program and Cactus Spam Filter will instantly protect it!

ChoiceMail One   
http://www.digiportal.com

ChoiceMail is a spam-blocking system based on the premise that all incoming email is assumed to be spam until senders have obtained permission (called registering) to send you email. Until they do so, mail from unapproved senders will not appear in your email application. Unapproved senders are automatically offered the opportunity to register. If they do so you are notified so that you can choose to approve (or not) all future emails from that sender. You can also easily preapprove your existing contacts. The registration process requires manual intervention by the sender, thereby eliminating all automatic spamming systems. When our system tray icon flashes, you've got legitimate mail.

SpamDummy!   
http://www.dummysoftware.com

SpamDummy! is a powerful and easy to use spam blocker for all POP3 email clients including Microsoft Outlook, Microsoft Outlook Express, and more. SpamDummy! blocks spam, email viruses, and harmful content directly at the email server so that you never have to waste time downloading them. SpamDummy! is compatible with Windows 95/98/ME/NT/2000/XP, Microsoft Outlook/Outlook Express, and all other POP3 email clients. SpamDummy! contains the following unique features to protect your email: SpamDummy! is very easy to install. Outlook and Outlook Express requires no setup on your part - configuration is done automatically. Emails sent to you are checked against several DNS blacklist databases. These databases contains thousands of spam IP addresses and are updated daily. Emails sent to you are checked for viruses and harmful attachments. All harmful email is deleted at the server and never reaches your PC. Emails sent to you are checked against a list of custom Block Rules you create yourself. These rules allow you to block email containing certain words in the body, subject, etc. SpamDummy! also has the option to convert all HTML emails to plain text. This protects you from spammers and viruses which might embed harmful HTML commands or tracking codes within email.

Popup Ad Stopper   
http://www.electrasoft.com

Popup Ad Stopper is a simple, easy to use popup blocker. Popup Ad Stopper works with any web browser, not just one or a select few, like most popup blockers. Popup Ad Stopper actually filters web page content as it is coming in from the Internet, before it reaches your web browser.

Internet Watcher 2000   
http://www.turbodemo.com

Internet Watcher makes surfing faster by removing banner advertisements, Pop-Up windows, Cookies, Java applets, and Javascript. You can set the program to display only the first frame of animated images. In addition to saving network resources, Internet Watcher makes pages easier to read and quicker to print. The Parental Protection enhances the peace of mind of parents, teachers, and business owners by filtering web pages and ensuring that only appropriate content finds its way to the screen. It's easy to include or exclude web pages by URL, or by defining a set of keywords that you deem to be inappropriate for your users. Questionable pages can be blocked or password-protected. In addition to defining who can see what pages, at what times, you also have an audit trail that keeps track of which web pages have been visited. The program's bi-directional cookie management uses a filter list and an algorithm to distinguish between cookies that are needed to let you revisit important web sites, and those cookies that are violating your privacy. Internet Watcher makes it easy to accept cookies normally, block them, or assign them your own expiration date. You can also do housekeeping on the existing cookies on your computer. Because Internet Watcher 2000 is a true proxy server, it can be installed easily on a LAN's web server, and all employees can share a single Internet connection. By maintaining Internet Watcher 2000 data on the server, the network administrator can manage cookies, filter pages, and maintain log files for all Internet users on the LAN. The program includes interfaces in English, German, Japanese, French, Spanish, Italian, and Hungarian. Internet Watcher 2000 runs under Windows 95/98/Me/NT4/2000, and can be easily auto-configured to work with Netscape Navigator 2 or newer, Microsoft Internet Explorer 3 or newer, or Opera 3 or newer.