This document summarizes the top 10 web-based educational technologies as of October 2008. It provides a brief description of each technology, including wikis, mind mapping tools, social networking sites, and virtual worlds. The number one technology is Sloodle, an open source project that integrates virtual worlds like Second Life with learning management systems like Moodle. The document advocates for educators to adopt tools that promote interactivity, collaboration, and social constructivist learning online.