Bobo Ratio is a one-to-one Web traffic trading script. It trades unique links with a one-to-one ratio. It uses the filesystem to store its data, so no database (i.e. MySQL) is needed. It is modular and easy to set up and use. It is simple. People send you traffic and you can track that and choose to send it back.
Wolf Software Curse Filter Class filters out curse words. It uses a basic default list, but can be added to dynamically. It's useful in any site with shared posted content, to allow people to filter what they personally find offensive. It's ideal for forums, social networking sites, etc.
psArchive is a PHP 5 extension designed to provide an easy to use interface for manipulating all the most common archive files used in Web projects at high speeds and workloads. It is especially designed for Web applications that need to understand, to produce, or even edit archives in order to function.
File Manager System (FMS) is a PHP class to manipulate files and directories stored on the server side. It can perform several types of operations on files and directories. It can list and retrieve information about files and sub-directories of a given directory, sorted by several types of parameters. Files and directories can be removed from a list. It can search for files and directories by name. Directories can be created, renamed, and deleted. Files can be created, renamed, moved, copied, deleted, uploaded, and highlighted.