HAB-related holdings
- OPAC – HAB online catalogue
- Systematic access to OPAC (open-access shelving)
- Manuscript database (access to full texts of older catalogues, digitised manuscripts, publications about manuscripts)
- Portrait database
- Essay documentation
- Funeral sermons in the HAB
- Catalogue of printed works by Luther held in Wolfenbüttel
- Hebraica and Judaica in the HAB (GBV version)
- Virtuelles Kupferstichkabinett (Virtual Print Room) in the HAB and the HAUM Braunschweig
- List of holdings of paintings in the HAB
Regional and national catalogues of holdings and bibliographies
- GBV – Common Library Network
- KVK – Karlsruhe Virtual Catalogue
- Braunschweig Regional Catalogue
- VD 16 – Catalogue of books printed in the German-speaking territories in the 16th century
- VD 17 – Catalogue of books printed in the German-speaking territories in the 17th century
- VD 18 – Catalogue of books printed in the German-speaking territories in the 18th century
- Former university of Helmstedt library – online catalogue
- IKAR – maps printed pre-1850 in the GBV
- Digital portrait index
- Prints portal
