Tftpd64 is a free, opensource IPv6 ready application which includes DHCP, TFTP, DNS, SNTP and Syslog servers as well as a TFTP client.
The TFTP client and server are fully compatible with TFTP option support (tsize, blocksize and timeout), which allow the maximum performance when transferring the data.
Some extended features such as directory facility, security tuning, interface filtering; progress bars and early acknowledgments enhance usefulness and throughput of the TFTP protocol for both client and server.
The included DHCP server provides unlimited automatic or static IP address assignment.
One task this is often used for is to upgrade firmware files for professional grade networking equipment via the TFTP protocol - FTP over UDP (Routers, Access Points, etc)
Plugin v1: 
TFTPd64_Plugin_v1.7z (474.01 kB - downloaded 132 times.)