Once upon a time, back in the 20th century, there used to be
ftpd in the Linux world. It was more fully known as "the NetKit
ftpd", and it was originally a quick-hack port of BSD FTP daemon code, as it existed at that time.
As far as I can determine, its last version from the actual maintainer (0.17) was released in July 2000, and only contained a fix for a remotely exploitable security hole that was found in version 0.16. According to the README file in the source package, it's a port of OpenBSD ftpd as it existed in July 1999, and does not support PAM and won't track FTP sessions in the
As the name "NetKit" implies, there used to be a "kit" of networking tools for Linux, but the maintainer split that apart, at least in part because releasing all the tools together sometimes delayed important security fixes. After the split, NetKit
ftpd stagnated and I think even the maintainer recommended using something else instead.
And now, 18 years later, Debian does have a package for NetKit ftpd version 0.17-36 in their current stable distribution, but has this to say about it (emphasis mine):
This is the netkit ftp server. You are recommended to use one of its alternatives, such as vsftpd, proftpd, or pure-ftpd.
This server supports IPv6, and can be used in standalone mode as well as in inetd-slave mode, but other servers have better long-term security screening.
So... yes, if security and/or reliability is at all important to you, you should definitely pick one of the "name-brand" FTP servers you mentioned, instead of trying to use one that's been on software equivalent of artificial life-support for almost two decades.