Apache Commons Net implements the client side of many basic Internet
protocols. The purpose of the library is to provide fundamental protocol
access.
Supported protocols are:
* FTP
* NNTP
* SMTP
* POP3
* Telnet
* TFTP
* Finger
* Whois
* rexec/rcmd/rlogin
* Time (rdate) and Daytime
* Echo
* Discard
* NTP/SNTP
WWW: http://commons.apache.org/proper/commons-net/