Software Features

ProFTPD offers the following features, with many more planned):

Single main configuration file, with directives and directive groups which are intuitive to any administrator who has ever used the Apache web server.
Per directory ".ftpaccess" configuration similar to Apache's ".htaccess".
Easy to configure multiple virtual FTP servers and anonymous FTP services.
Designed to run either as a stand-alone server or from inetd/xinetd, depending on system load.
Anonymous FTP root directories do not require any specific directory structure, system binaries or other system files.
No SITE EXEC command. In modern Internet environments, such commands are a security nightmare.
Source code is available (and must always be available) for administrators and developers to audit.
Hidden directories and files, based on Unix-style permissions or user/group ownership.
Runs as a configurable non-privileged user in stand-alone mode in order to decrease chances of attacks which might exploit its "root" abilities. Note: This feature is dependent on the capabilities of the host Unix system.
Logging and utmp/wtmp support. Logging is compatible with the wu-ftpd standard, with extended logging available.
Shadow password suite support, including support for expired accounts.
Modular design, allowing server to be extended easily with modules. Modules have been written for SQL databases, LDAP servers, SSL/TLS encryption, RADIUS support, etc.
IPv6 support.

Platforms

ProFTPD is known to compile and run on the following platforms. If you know of any that are not in this list, please contact the core team.

(*) The ProFTPD core team has access to test on this platform. If you wish to donate hardware or network access, please contact the core team.

(+) While ProFTPD should compile "out of the box" under Mac OS X, Fink includes ProFTPD in its distribution for OS X.