MainCAT allows users to search every text held by Gladstone's Library. It covers both open and closed access areas. Day Readers and Friends can login using the code found on their library card. Once logged in, users can reserve texts, save search queries, and make lists of favourite texts.
GladCAT is separate from MainCAT and searches only those texts that we know to have been personally owned by William Gladstone. Many of these, like Gladstone's own copies of works by Homer, Dante, Walter Scott, Newman, and Tennyson, contain Gladstone's own annotations. GladCAT allows users to search Gladstone's annotations as well as the titles of his books.