Developed through a project at Rice University, Connexions is a place for sharing free scholarly materials to promote educational collaboration and allow authors to expand the reach of their course materials. The website is powered by open source software, which allows registered users to post materials and create custom modules. Individuals are encouraged to contribute if they have course materials "and want to maximize its impact" or are hoping to translate their course or module into another language. Visitors can search or browse the materials already posted in the Content Commons without registering. There are already thousands of postings ranging from animal rights to an overview of signals and systems. A Roadmap plug-in assists in navigation and shows how content in one module relates to other topics. A software technology page provides additional information on the open source toolkit under development as part of this project.