There is a myriad of reasons why internet users might seek to share files anonymously, with the first that comes to mind being the plight of whistleblowers or political activists trying to avoid persecution. OnionShare is a free P2P file sharing service created by technologist Micah Lee that operates without middlemen. OnionShare boasts of the most secure file sharing capability available and one only has to go to Github to download it.
Among the advantages of OnionShare is that users can share files of any size hosted on their computers and the remote recipient does not need to have the software.
The recipient does have to use the Tor network to access the files.