While not exactly a banner exchange, AutoPub allows your visitors to insert a link in your home page with a little banner to their site, until an other visitor replaces it with his. The old one goes to a gallery page. A protected admin panel allows you to modify all configuration parameters: displaying delay, banner size, fonts, colors, etc. Installation is fully automated, and there is French and English language support. It requires MySQL.
The Automagical Sudoku Solver attempts to solve Sudoku puzzles for you using various techniques. Although it has come a long way, there are still some tough puzzles that it can't solve. Puzzles are entered in the text file provided, and "ass < foo" will solve your puzzle in a pinch.
Avactis Shopping Cart is an online store software. It can be customized for any design with no programming skills, and is easy to integrate with an existing Web site through a unique tag-based technology. It is SEO optimized, secure, and easy to upgrade. One of the major advantages of Avactis is the use of unique technologies that, unlike other shopping cart software, provide for fast and easy integration of an on-line store into an existing Web site, thus minimizing the time-to-market for our customers and partners. The software has no logical limitations on the number of products. The code is optimized for smooth performance with up to 35,000 products and more. A free version is available. Special discounts are given for developers and Web designers.
AxY FTP (formerly known as WXftp) is an easy-to-use FTP client for the X Window System. Features include an intuitive user interface (Motif and GTK+), side-by-side local and remote directory listings, simple and convenient session manager, on-line help, progress bar, passive and non-passive transfers, and more.
BackPlay a program that plays music files from a folder in the background. At login, it scans a directory called "BackPlay" under the user's Music directory, and begins playing any music files it finds there in random order. BackPlay is independent from iTunes. It can be paused from an icon in the status area.
backstep.py is a backup program that can be run in a directory. It makes a snapshot backup of the directory in a specified interval. The system backs up every file that has changed or was created in the specified interval. The user can restore a backup by telling the system to restore a backup that is a given amount of time old.
BackupMX consists of two programs, 'Store' and 'Forward'. Store accepts SMTP connections, takes all mail given to it, and stores it in a file. Forward takes that file and forwards it over SMTP to a fixed destination. This is code for integrating into your own projects rather than using as is. It is suitable for creating a disaster-recovery mail handler, but would also make a good basis for a spam filter, a tarpit, a honeypot, or a greylist filter. It is written in simple C, and has no external dependencies such as libsmtp.