<odesi> is a web-based data exploration, extraction and analysis tool. It is the product of a unique partnership between university libraries, business, and government, which greatly improves access to statistical data for researchers, teachers, and students. <odesi> provides researchers the ability to search for survey questions (variables) across hundreds of datasets held in a growing number of collections. <odesi> supports basic tabulation and analysis online, and allows for the downloading of most datasets into statistical software for further analysis. <odesi> provides unprecedented access to extensive collections of polling and social survey data.