The following has been added to the Zotero Group for Ancient World Open Bibliographies and the Ancient World Open Bibliographies Wiki.
Tulliana: Cicero and Roman Thought, Bibliography
http://www.tulliana.eu/biblio.php?LANG=E&TIPO=PR
International Society of Cicero’s Friends
Updated 2012.
This 1792-item bibliography can be browsed (alphabetically by author) or searched by author, title, keyword, or several other fields. It includes articles and monographs (with information on reviews attached to monograph entries) in multiple languages, dating from the 19th century to the present. Entries include annotations, in some cases quite lengthy and detailed ones, as well as URLs when materials are available online (in, for example, JStor or Perseus). The site as a whole is available in English, French, and Italian interfaces; individual annotations in the bibliography may be in any of these languages.