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ProFTPD

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PlanBilled and limitsPrice
ProFTPDGPL-licensed FTP server softwareFree

As proftpd.org lists them, read 11 Oct 2026. The maker's own page has the final word.

Facts from ProFTPD's own pages

Access controls
Directory and file visibility can be controlled by Unix-style permissions or user and group ownership. · github.com, 11 Oct 2026
Authentication
The README lists PAM, LDAP, SQL, and RADIUS among its supported authentication methods, as well as virtual users and multiple password files. · github.com, 11 Oct 2026
Configuration
Its main configuration uses directives and directive groups patterned after Apache’s, and it supports per-directory .ftpaccess configuration. · github.com, 11 Oct 2026
Extensibility
ProFTPD has a modular architecture with an API for extensions. · github.com, 11 Oct 2026
FTPS
The mod_tls module implements FTP over SSL/TLS as defined in RFC 4217. · github.com, 11 Oct 2026
License
The source code is licensed under GPLv2 and is available to audit. · github.com, 11 Oct 2026
Operating modes
It is designed to run as a standalone server or from inetd/xinetd. · github.com, 11 Oct 2026
Platform scope
The source README describes ProFTPD as a daemon for Unix and Unix-like operating systems. · github.com, 11 Oct 2026
Privilege handling
Where the host system supports it, ProFTPD can run as a non-privileged user in standalone mode. · github.com, 11 Oct 2026
Privilege reduction
Where host system capabilities allow, it can run as a non-privileged user in standalone mode. · github.com, 11 Oct 2026
Purpose
ProFTPD is highly configurable GPL-licensed FTP server software. · mirror.facebook.net, 11 Oct 2026
Release availability
The project home page lists maintenance release 1.3.9d and candidate release 1.3.10rc4. · mirror.facebook.net, 11 Oct 2026
Release downloads
The project home page links to PGP public keys, SHA256 checksums and PGP signatures, and a Git repository under Downloads. · mirror.facebook.net, 11 Oct 2026
Security design
The README says ProFTPD does not execute external programs and generates file and directory listings internally. · github.com, 11 Oct 2026
Security reporting
The project home page links to bug reporting and security guidelines and to a bug reporting system. · mirror.facebook.net, 11 Oct 2026
Server modes
It can run as a standalone server or from inetd/xinetd. · github.com, 11 Oct 2026
SFTP and SCP
The mod_sftp module implements SSH2 and its SFTP subsystem and supports SCP; it does not provide shell access. · github.com, 11 Oct 2026
Source availability
The README identifies the source code as GPLv2 and says it is available to audit. · github.com, 11 Oct 2026
Support
The project home page links to forums and user and development mailing list archives. · mirror.facebook.net, 11 Oct 2026
Virtual hosting
It supports multiple virtual FTP servers and anonymous FTP services. · github.com, 11 Oct 2026

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