RaidenFTPD

If you're tired of using complicated and unreliable FTPs, you need an application like this one.

RaidenFTPD lets you share your files easily, and have absolute control over the process that lets you, among other things, send encrypted files, set download speed and capacity, get detailed information about transferred files, etc.

Since it's really easy to handle, anyone can use it. You can even set different transfer capacity levels depending on your needs.

Another positive feature is its security, as it lets you hide files or encrypt them before you send them.