The best replacement for tftp is ftp.

The best alternatives to tftp are rated as following:
★★★★★  ftp
★  xmodem
  sftp

Your alternative for tftp is not listed? Suggest!
Speaking about tftp, one probably shouldn't forget about dhcp server.

Other search terms related to tftp and their ratings are:
★★★★★ dhcp server
★★ pxe
You have in mind a companion for tftp and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of tftp in all years. Click on graph for more.
tftp
ftp
xmodem