These are descriptions of the packages in the Slackware contrib directory.
They are frequently used by a system administrator for remote login on a 
(amateur radio) node.

opie-2.32: One-time Passwords In Everything, Release 2.32
opie-2.32: 
opie-2.32: OPIE is a freely distributable software package originally developed
opie-2.32: at and for the US Naval Research Laboratory (NRL).
opie-2.32: OPIE provides a one-time password system. The system should be
opie-2.32: secure against the passive attacks now commonplace on the Internet
opie-2.32: (see RFC 1704 for more details).
opie-2.32: This Slackware binary package only contains the OPIE client software.

httptunnel-2.90: httptunnel version 2.90
httptunnel-2.90: 
httptunnel-2.90: httptunnel creates a bidirectional virtual data path tunnelled
httptunnel-2.90: in HTTP requests.  The requests can be sent via an HTTP proxy
httptunnel-2.90: if so desired.
httptunnel-2.90: httptunnel is written by Lars Brinkhoff.