MailWasher Server is an open-source, server-side junk mail filter package for businesses. MailWasher Server differs from other open-source server anti-spam packages in that it offers a polished, well-integrated web interface and built-in quarantine management facilities. MailWasher Server is easier for administrators to set up and manage and easier for users to use the product on a day-to-day basis. MailWasher Server fully supports Windows Server/Exchange Server systems, in addition to Unix-based systems such as Linux and Solaris.