smtpsend is a simple SMTP client to transmit an email message to an SMTP server. It is designed for use by programs that need a simple, flexible way to send email, or for experimenting with SMTP. In many cases, sendmail can do what this program does, but it is much more complex, harder to set up and use, and doesn't give you as much lower level control. This program is written in Perl and is based on Perl's Net::SMTP module. It makes a great starting point for writing SMTP client functions into your own Perl program.
Aerial Chat is a powerful chat system. It is easy to install, and features a no flicker update, kick, ban, iptracer, toplists, DHTML layers, unlimited channels, private messaging, a spy mode, telescriptor, images, links, easy smiley management, jail mode, MP3s, graphic effects, and a nice design.
The rcpod (Remote Controlled PIC of Doom) project is based on firmware for the PIC16C745 or PIC16C765 microcontrollers that executes I/O operations on behalf of the USB host. Included are libraries for C and Python programs to access the rcpod device, PCB layouts for rcpod devices, and example programs. It currently supports basic general-purpose I/O, pulse-width modulation, synchronous and asynchronous serial, and RS-485.
The bitap library is a clean implementation of regular expression (regex/grep) string matching using the bitap algorithm. Approximate (a.k.a. fuzzy) matching is allowed. This is the same algorithm as the one used in Glimpse and agrep, but it is much more complete with regard to regular expression syntax, and is much cleaner.
Fetchgals is a Web spider that locates and optionally downloads free pictures and movies from the internet. It comes with an extensive list of Web sites that are visited to locate thumbnail galleries, and the pictures or movies from these galleries can then be downloaded or linked to from local HTML pages. The list of downloaded galleries is kept so that downloads can be resumed after interruption and so that nothing is ever downloaded twice. Disk space is monitored to avoid overruns.