Downloading TFTP Client 4.2.0.1420 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available. We recommend checking the downloaded files with any free antivirus. This program was originally developed by Weird Solutions, Inc. The program lies within System Utilities, more precisely File Managers.
From the developer:
A rock-solid server with a venerable history, TFTP Turbo is used daily by thousands of companies and institutions worldwide. Whether you're configuring VoIP telephones, providing remote boot facilities or managing embedded devices, TFTP Turbo offers an unmatched set of features at a great price.
Includes full support for IPv6 as well as a complete set of professional documentation. Available for Windows and Linux.
You may want to check out more software, such as eM Client, which might be similar to TFTP Client.
Network tools
System Tools