Trek is both a Web browser and a new kind of social network. It allows its users to meet and interact by overlaying the Web with graphical avatars. Said avatars represent each user on a given page and can be moved freely about the content. Users can form parties or "browsing treks" and move about the Web in a group.
Neurocognitive Linguistics is an approach to linguistics developed by Sydney Lamb that uses relational networks to model what the brain actually does when it handles language. Neurocognitive Linguistics Lab ("NeuroLab" for short) is a program that allows you to experiment with relational networks using a convenient GUI and record the results of your experiments in tabular form.