Spam Buster
- This filter requires a POP3 account. Available for Windows 9X/2000/ME/NT.
- http://www.contactplus.com/products/spam/

Norton AntiSpam
- Filters messages from a POP3 inbox and some major email service providers.
- http://www.symantec.com/searchlanding/antispam/

MailSweep
- Permits browsing the mailbox before downloading full messages.
- http://www.crystaloffice.com/mailsweep/

MailShield
- Filter that uses fuzzy logic, customizable filters, white/black lists to remove spam.
- http://www.lyris.com/products/mailshield/

SpamMonitor
- SpamMonitor works in conjunction with file based mail servers, like Mdaemon, MailCoach, MS SMTP service, Winroute, etc. It will monitor for new files with a certain extension and passes all new messages to the spam filter.
- http://www.digiarch.org/spammonitor.html

Spam Solution Net - spam solved worldwide
- Spam Solution, content filtering, email and device management, protection against viruses, spyware,spam blocker, spam, spam blockers, spam filter, anti spam software, spam filtering, anti spam filter.
- http://www.spam-solution.net

SpamAid
- SpamAid is an add-on for Microsoft Outlook 2000/XP/2003. It operates under Microsoft Windows 98/ME/NT/2000/XP. Uses Bayesian filtering, friends and enemies lists, and can evaluate if outgoing messages will be treated as spam.
- http://www.spamaid.com

Inbox Protector
- Add in for Outlook 2000/XP that works in a POP3 inbox. It includes customizable filters and white and black lists.
- http://www.gbs-design.com/InboxProtector/

SpamBrave
- A plugin for Outlook Express which uses statistical analysis to filter Spam. Works with a POP3 inbox. (Windows 98/ME/NT/2000/XP)
- http://www.spambrave.com

StandBayeMail
- Java POP3 proxy that classifies mail using a Bayesian filter.
- http://standbayemail.sourceforge.net

Spamlook 2003
- Bayesian spam filter specifically for POP3 accounts and Microsoft Outlook 2000/2002/2003.
- http://www.spamlook.com/

Mailwasher
- Protects your computer from unwanted email spam and stops viruses before you download them.
- http://www.mailwasher.net/

SpamPal
- A free filter that uses DNSBL lists to filter an IMAP or POP3 account.
- http://www.spampal.org/

Lockspam
- An add on for Microsoft Outlook users. Includes white/black lists. Free for individual users
- http://www.polesoft.com

Spamihilator
- Filter that works with any POP3 client. Uses Bayesian filtering.
- http://www.spamihilator.com

K9
- Uses Bayesian filtering together with a POP3 account.
- http://www.keir.net/k9.html

Ella
- A plugin for Outlook that works for a POP3 account. Available for 2000/XP.
- http://www.openfieldsoftware.com/

POPFile
- Filter for your POP3 inbox. It uses Bayesian filtering.
- http://popfile.sourceforge.net/

Disruptor OL
- Antispam filter for Outlook 2000/XP. Works with POP3, IMAP or exchange. It includes Bayesian filter, white/black lists, scoring.
- http://www.hlembke.de/prod/disruptor/

Spam Blocker
- Spam Blocker features VBA-enabled filtering technology that integrates tightly with Microsoft Outlook 2000/2002.
- http://www.programmingmsaccess.com/spamblocker/

Mailboxfilter
- A spam filter that sorts mail into folders, it includes virus protection. Available for Windows 9X/ME/2000/NT.
- http://www.mailboxfilter.com

Spam Filter
- Filter for Eudora which uses a preset set of rules for filtering spam.
- http://maxlevel.com

Mail Unknown Anti-Spam
- Filter for a POP3 e-mail server that uses authentication as a way to filter spam.
- http://www.mailunknown.com

Spam Fighter
- FIlter for Outlook. Works with POP3/IMAP servers.
- http://www.spamfighter.com

SpamWeed
- Bayesian spam filter for Outlook Express, Outlook and all POP3 clients. Available for Windows 98/ME/NT/2000/XP.
- http://www.spamweed.com

Apdsoft
- Automatically scans a POP3 mailbox and removes spam, virus-unsafe and other unwanted messages, based on rules set by the user.
- http://www.apdsoft.com/mfilter/index.htm

SpamButcher
- Fuzzy-logic based anti-spam filter for Windows systems.
- http://www.spambutcher.com

Cloudmark Desktop
- Add-in for Outlook and Outlook Express which identifies spam by checking each message in the inbox against a database.
- http://www.cloudmark.com/

Spam Counter Strike
- An Easy to use anti spam and junk email filter that works with a POP3 server. Available for Windows 98/ME/NT/2000/XP.
- http://www.spamcounterstrike.com

Qurb
- Anti-spam software for Microsoft Outlook that uses an approved sender list rather than content-based filters.
- http://www.qurb.com

Spam Control
- Filtering tool for Outlook. It creates messages so that you can report spam to SpamCop.
- http://www.hendricom.com/spamcontrol.htm

AntiSpamWare
- works with a POP3, IMAP, Aol or Hotmail account. Available for Windows 9X/NT/2000/XP.
- http://www.antispamware.com

Spam Agent
- Filters a POP3 or IMAP account, works with any client and any version of Windows.
- http://www.anti-spam-software.com

Spam Deputy
- Filter tool for spam. Requires subscription to SpamCop.
- http://www.spamdeputy.com/

Misermail
- E-mail program whose main feature is to access a POP3 account and filter spam.
- http://www.micromiser.com/email.htm

Herbivore
- Filters your e-mail from a POP3 or IMAP servers by creating a digital signature for each message. Allows customization.
- http://www.herbivore.us

SpamEater Pro
- Email filtering system that can automatically receive periodic updates to its filtering rules.
- http://www.hms.com/spameater.asp

PSFPOP3
- Application that fetches and filters mail from any POP3 account.
- http://www.disconova.com/utu/psfpop3/

IHateSpam
- An add-on for Outlook/Outlook Express which quarantines possible spam.
- http://www.sunbelt-software.com

Spam Bully
- Email filter for a POP3 inbox. Includes a self learning spam filter and friends/spammers list. (Win 98/ME/2000/XP)
- http://www.spambully.com/

MailMate
- Filter for a POP3 inbox. Built-in and customizable rules,white/black lists.
- http://www.brezosoft.com

Email Remover
- Retrieves just the headers of the email and lets users selectively download only the mail they want.
- http://www.eremover.bizhosting.com/

SortMonster
- Filters spam by content against a subscription database containing thousands of rules.
- http://www.sortmonster.com/

SpamKiller
- Offering five different filter types that let you filter on any part of a message.
- http://www.spamkiller.com/

JunkMuncher
- Runs on all the Windows platforms starting at Win95. It only supports the POP3 protocol.
- http://www.junkmuncher.com/

QuarantineMail
- Add-in for Microsoft Outlook 2000/XP that filters known senders to your inbox and challenges others.
- http://www.quarantinemail.com

Inboxer
- Filter for Outlook which uses Bayesian analysis to detect Spam.
- http://www.inboxer.com

Junk-Out
- Bayesian junk mail filtering integrated directly into Microsoft Outlook.
- http://www.junk-out.com/

Outlook Spam Filter
- Uses Bayesian algorithm, friends lists and customizable keywords to filter your e-mail.
- http://www.outlook-spam-filter.com/