UFTP

UFTP is a lightweight utility designed to help you transfer files to multiple receivers at the same time. Since security is of critical importance for an application in this category, you will be happy to learn that the transfers are done with UDP (User Datagram Protocol) encryption. 

It is important to note that the connection is also based on TLS with extensions and allows the receivers to share a common key.You can be certain that the files are transferred securely and reliably. Moreover, the connection is NAT traversal, meaning that it can communicate over disjoint networks separated by multiple firewalls. As it relies on the UFTP proxy server, the connection is completed without full end-to-end multicast capability through the aforementioned server.

According to the developer, the tool can be especially beneficial when transferring large files to numerous receivers as well as when the data is transmitted over a satellite link. On a side note, satellite links are known to have an inherited delay that, in turn, makes the TCP connection inefficient. This is where the app comes in to fix the delay in the connection, thus making sure that all multiple receivers can transfer the file efficiently.