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- Web UIs for administration or per-user configuration: WebUserInterfaces
- Commercial SpamAssassin products: CommercialProducts
- Statistics and analyzers: StatsAndAnalyzers
Wiki Markup Firewall/Passthrough like filter: [OpenProtect], [AssassinDeamon], \[http://www.etc.msys.ch/software/smtp-vilter/index_html/view SMTP-vilter\]
- Central integration of sa-learn with IMAP shared folders: RemoteImapFolder
- Free Open Source Windows POP3 proxy (unsupported): SaProxy (but not SAproxy Pro)
Wiki Markup Let users run [SpamAssassin] on messages during the SMTP session: \[http://www.mailavenger.org/ Mail Avenger\]
- Third party "drop-in" CustomRulesets and CustomPlugins
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