Free network and server monitoring tool for Uptime / Downtime Monitoring of servers, web / intranet sites / applications, and network hardware via SNMP, WMI, HTTPS, FTP, ODBC, IMAP and more. The free version allows you to run up to 50 network monitors.
MDaemon Messaging Server, email server software, is a trusted alternative to Microsoft Exchange or SBS. MDaemon supports IMAP, SMTP, POP3, and ActiveSync protocols and delivers solid performance from its feature-rich and user-friendly design.
CleanMail is a complete Anti-Spam / Anti-Virus solution (SMTP / POP3) that works with any mail server like Microsoft Exchange, Microsoft Small Business Server (SBS), Lotus Notes / Domino or IMail.
Winmail Server is an enterprise class mail server software system offering a robust feature set, including extensive security measures. Winmail Server supports SMTP, POP3, IMAP, Webmail, LDAP, multiple domains, SMTP authentication, spam protection
WeOnlyDo! COM ImapServer ActiveX control is component that can be easily integrated into your applications to provide full IMAP4rev1 protocol server implementation.
EmailArchitect Email Server is a fast and secure email server supporting SMTP, POP3, IMAP4, SSL and WEBMAIL, web admin, domainkeys / DKIM, anti-spam / virus modules, global & private address books, multiple languages, SDK, mailing list service & more.
MailEnable Enterprise Edition is designed for organisations or ISP’s dealing with high volumes of mail, requiring greater control and flexibility over mail services.
MailEnable Standard provides SMTP, POP3, IMAP and webmail for Windows 2003 / 2008 / 2012 systems. Simple installation procedure and powerful administration tools means that you will be up and running quickly. FREE for personal and commercial use.