AWS Transfer for SFTP - AWS Transfer for SFTP (AWS SFTP), is a fully managed service hosted in AWS that enables transfer of files over the Secure Shell (SSH) File Transfer Protocol directly in and out of Amazon S3.
FileWhopper - Share large files or folders of ANY SIZE online easily and securely. Your files are encrypted & password-protected. Download while still uploading. No monthly subscription or storage to buy, just a one-time fee based on file size.
IBM Sterling File Gateway - IBM Sterling File Gateway is an easy solution to transfer files with different file formats and protocols.
NordLocker - Keeping files in the cloud? Protect them with leading-edge encryption. NordLocker makes file security easy.
MOVEit - Secure data & file transfer for enterprise-level users
Send.cm - Send files, one time download links, unlimited download, unlimited upload, ads free.