Send is described as 'Lets you share files with end-to-end encryption and a link that automatically expires. So you can keep what you share private and make sure your stuff doesn’t stay online forever' and is a popular large file transfer service in the file sharing category. There are more than 100 alternatives to Send for a variety of platforms, including Web-based, Windows, Linux, Mac and Android apps. The best Send alternative is OnionShare, which is both free and Open Source. Other great apps like Send are Transfer.it, pCloud, Hoodik and Wormhole.
Send alternatives are mainly Large File Transfer Services, but if you're looking for
Cloud Storage Services or Peer-to-Peer File Sharings you can filter on that. These are just examples - use the filter bar below to find more specific alternatives to Send.
Unlike Send, this one is not end-to-end encrypted. Password protection is for authentication only, your browser still gets a regular HTTPS link to download unencrypted contents.
I would not trust a service with such "generous" free tier with files that weren't encrypted locally before uploading, and sharing a password separately from the link with the other party is simply less convenient.