More or less up to date:

• jbot - simple twitter bot
• findtweets - find tweet message ids by user and hashtags
• tweet - a very simple command-line tweeter
• yvc - a software package vulnerability scanner (developed at Yahoo!)
• 2vcard - a small perl script to convert addressbooks into the popular VCARD format.
• bbweather - a small program, based on bbdate and inspired by wmWeather, which displays the current weather conditions.
• news(1) - a BSD licensed version of the news(1) program. (md5 sum signed with my GPG key)
• splitmail - a small program to split mbox input into individual files, one per email. [PGP signed checksums]