FTP server via command-line

Have a look at CrushFTP

CrushFTP is a powerful file server supporting standard secure file transfer protocols. The 'Crush' in CrushFTP comes from its ability to compress transfers on the fly seamlessly making for faster transfers! Combining the inline compression support with the high speed transfer options, you have the fastest file transfer options for high latency connections possible.

In about 10 clicks you can be fully configured and ready to login.

I'm now using FTPDMIN, which is not ideal due to lack of security, but for my purposes (unit tests) its fine.

Simple ad-hoc file transfer Windows FTP server.

ftpdmin v. 0.96  Jun 7 2004
Using 'C:\' as root directory
ftpdmin ready to accept connections on ftp://192.168.0.101    
    220 Minftpd ready
USER anonymous
    331 pretend login accepted
PASS [email protected]
    230 fake user logged in
SYST
    215 WIN32 ftpdmin v. 0.95
PWD
    257 "/"
TYPE I
    200 Type set to I
PASV
    227 Entering Passive Mode (192,168,0,101,5,178)
CWD /
    250 CWD command successful
LIST
    150 Opening connection
    226 Transfer Complete
PASV
    227 Entering Passive Mode (192,168,0,101,5,178)
SIZE /bottles.jpg
    213 18003
MDTM /bottles.jpg
    213 20040509122422
RETR /bottles.jpg
    150 Opening BINARY mode data connection
    226 Transfer Complete

You can also look at the open source FileZilla server.

FileZilla Client is a fast and reliable cross-platform FTP, FTPS and SFTP client with lots of useful features and an intuitive graphical user interface.

^{(Click image to enlarge)}