What are some alternatives?
When comparing FilePizza and Send Anywhere, you can also consider the following products
qBittorrent - Lightweight and open source torrent client that runs on all major platforms.
WeTransfer - WeTransfer is a free service to send big or small files from A to B.
Transmission - Transmission has the features you expect in a BitTorrent client: encryption, a web-based interface...
Firefox Send - A file sharing which allows you to send encrypted files to other users.
Deluge - Deluge is a full-featured BitTorrent client for Linux, Unix and Windows.
Volafile - Volafile.org offers real time filesharing and fast downloads without delays or annoying countdowns.