Pure Java TFTP server.
Free, portable, cross-platform.
Fully multi-threaded. Implements RFC 1350.
Run as root/admin in cmd-mode with cmd argument = path to folder, for example:
java -jar pj-tftp-server.jar /tmp
.Need JRE-1.8.
Source - https://github.com/harp077/pj-tftp-server
If you like this - put a star on https://github.com/harp077/pj-tftp-server/ for support project please.