yamiMFTX Server is described as 'self-hosted solution for managed file transfer and file sharing on an ad hoc basis. It allows easily upload files via any modern browser, share and download files with your colleges, partners and customers' and is an app in the File Sharing category. There are three alternatives to yamiMFTX Server for Windows, Linux, Mac and SaaS. The best alternative is FileXpress. It's not free, so if you're looking for a free alternative, you could try GoAnywhere MFT.
GoAnywhere is a robust managed file transfer solution that helps companies streamline, automate, and secure file transfers to protect the sensitive data so critical to staying competitive in today's global economy.