Cryoserver - Cryoserver is an all-in-one email archiving solution that empowers you to preserve your email in a tamper-evident archive, making you transform your data into a useful archive for everyday use.
ISC DHCP - Enterprise-grade solution for IP address-configuration needs
MailStore - MailStore Home - A 100% free single-private-user desktop solution
TFTPD32 - A free tftp and dhcp server for windows, freeware tftp server
Hornetsecurity Email Archiving - Hornetsecurity Email Archiving is one of the advanced software that offers long-term, unchangeable, and secure storage of important company information, data, and flies.
haneWIN DHCP - haneWIN DHCP Server is a great platform that provides a BOOTP/ DHCP server entirely based on RFC 2131.