What will it be like to work in tomorrow’s digital library? We begin by browsing around an experimental digital library of the present, glancing at some collections and showing how they are organized. Then we look to the future. Although present digital libraries are quite like conventional libraries, we argue that future ones will feel qualitatively different. Readers—and writers—will work in the library using a kind of context-directed browsing. This will be supported by structures derived from automatic analysis of the contents of the library—not just the catalog, or abstracts, but the full text of the books and journals—using new techniques of text mining.