OLC - Online Content Databases - are databases that scan the contents of journals in the respective subject area. The databases are continuously supplemented by new selected journal titles. Online interlibrary loans or the fee-based document delivery service "Subito" can also be used via these portals.

Here is a thematically sorted overview of the OLCs:

• arthistoricum
• OLC-SSG Movie and Theatre Science
• OLC-SSG Book Studies, Library and Information Sciences
• OLC-SSG Arts and Art Sciences
• OLC-SSG Media and Communication Sciences
• Virtual library medien buehne film

• Mathematics Information Service
  
• GetInfo
• Journal of Green Building
• OLC-SSG Architecture and Civil Engineering
• OLC-SSG Mathematics and Informatics
• OLC-SSG Technology
• OLC-SSG History of Technology
• OLC-SSG Environment

• GetInfo
• OLC-SSG Chemistry
• OLC-SSG Earth Sciences
• OLC-SSG Physics
• OLC-SSG Psychology
• PSYNDEX - Psychology Informations
• ViFaBiology

• EconBiz - Portal for business economics
• ireon Portal - Specialized information service for international relations and area studies
• OLC-SSG International Relations and Area Studies
• OLC-SSG Political Science and Peace Research
• OLC-SSG Law
• OLC-SSG Social Sciences
• OLC-SSG Economic Sciences
• Sowiport - the online portal for social sciences
• Virtual Law Library