filegive easily sends or receives files point-to-point, with authentication and ciphering, and the other side only needs a Web browser. No third party server is involved in the transfer. It can use common NAT traversal protocols like uPnP and NAT-PMP, manually forwarded ports, or a public ssh server.
MammothCopy is a simple, Java-based tool to copy large or many files from one computer on the Internet directly to another. This is also possible with tools like WinSCP and an SSH server, but those are too complex for normal users. MammothCopy is geared towards parents wanting to send photos to their kids, or professionals who want to transfer huge files (only limited to the receiving end’s hard disk space).