Solarwinds TFTP server is a great little utility and tool that gives you the ability to transfer files to and from it for FREE.
Thanks to its non-existent price tag, it makes for the best tftp servers to utilize in your arsenal and IT toolbox, especially if you are working with switches, routers and firewalls that need to be updated, backed up and configured regularly.
The software can transfer file sizes up to 4GB in size and runs as a Server in Windows operating system.
Another added benefit of the Solarwinds TFTP Server is the ability to transfer multiple files at once (or simultaneously) due to its multi-threaded design.
For those interested in its security features, you’ll be pleased to know that you have the ability to allow/deny by individual IP Addresses and even IP Ranges if necessary.
This whitelist/blacklist functionality really cuts down on unauthorized access requests that could be happening.
Official Website and Documentation: