BLLDB is the online version of the "Bibliography of Linguistic Literature / Bibliographie Linguistischer Literatur (BLL)". It is one of the major sources of information on the internet for general linguistics with all its neighbouring disciplines and subdomains as well as English, German and Romance linguistics. Other languages are also covered to a smaller extent.

The bibliography lists journal articles, articles of conference proceedings, and other collective works as well as monographs, dissertations, and Festschrifts.