Countdown is a command-line program that is similar to the UNIX sleep command, but displays the amount of time remaining before the timeout.
sleepuntil is a mix of sleep(1) and at(1). It takes the same format of time as at(1), including "noon" or "teatime".
A Web filtering ICAP server for the Squid proxy server.
An Ubuntu-based Drupal 5 appliance that is easy to use and lightweight (170 MB).