The AAU Libraries Online Public Access Catalogue holds all the catalogue records of the main and constituent/branch libraries. It is organized into two bibliographic databases: the Union Catalogue (the main catalogue) and the Ethiopian Collection Catalogue.
The Union Catalogue contains over 500,000 volumes of books and bound journals. The Ethiopian collection database contains over 30,000 volumes of books, theses and dissertations and other documents in English languages and other languages.
The Addis Ababa University Electronic Theses and Dissertations, AAU-ETD, was established by the Addis Ababa University (AAU) Libraries in collaboration with the Graduate School in mid 2007 as a pilot project on specific disciplines: humanities, arts and social sciences.
The AAiT library has organized more than 10,000 E-book collections in the areas of Civil Engineering,Chemical Engineering, Mechanical Engineering and Electrical & Computer Engineering.The digital library also contains Engineering handbooks and Encyclopedias as well as Supplementary E-books for Engineering studys.