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.
PHP 5 Events is a PHP package that can be used to register event handlers and trigger the execution of actions when an event occurs. There are several classes that take care of registering objects that process events, triggering the execution of actions when an event is triggered, and retrieving detailed information about the events.
vuBB is Web-based a forum and bulletin board software. It includes a language system to easily change the forum's language with the use of language packs, an administration control panel, moderation options, the ability to use a forum as a link to another site, BBCode and smilies support, a template system to control the appearance, a full system for user groups and permissions, and polls.
The WSO2 Mashup Server is a platform for creating, deploying, and consuming Web services Mashups in the simplest fashion possible. It features support for consuming and deploying services using dynamic scripting languages, trivial deployment and redeployment, automatic and UI-based generation of Web services artifacts (e.g., wsdl, schema, policy), a set of gateways into a variety of information sources, including SOAP and POX/REST Web services, as well as plain old Web pages, and human-consumable results through a variety of user interfaces, including Web pages, portals, email, Instant Messenger services, Short Message Service (SMS), etc.