My group develops systems to help people manage information and share it with others. We consider both text (online discussion tools) and structured data (information visualization and management applications). A guiding principle is that humans are intelligent and creative information managers who can accomplish a lot if we build systems that can accurately model and present the sophisticated thinking that people apply to their information. In this talk I’ll take a rapid tour through many of these systems, discussing common motivations and solution themes. Tackling data, I’ll describe a systems that empower people to create their own data-management tools simply by authoring HTML documents. Exhibit lets users author HTML that turns into interactive data visualizations. Mavo adds data editing and spreadsheet-style formulas that permit the construction of full-fledged applications in a single HTML document. Tackling online discussion, I’ll discuss NB, an online-education tool for discussing course content in the margins, Murmur, a system that modernizes the mailing list to address its drawbacks while preserving its great utility, and Wikum, a system that bridges between discussion forums and wikis by helping forum participants work together to build a summary of a long discussion’s main points and conclusions.