Reference Databases
- AINM – National Database of Irish Language Biographies
- Archaeology – National Monuments Service
- Ask About Ireland
- BHO – British History Online
- BL Research Repository
- Burke’s Peerage
- CDI – Celtic Digital Initiative, UCC
- CELT – Corpus of Electronic Texts
- Census of Ireland
- CIRCLE 2.0 - Calendar of Irish Chancery Letters
- DIA - Dictionary of Irish Architects
- DIB – Dictionary of Irish Biography
- DIPPAM – Documenting Ireland: Parliament, People and Migration
- Down Survey of Ireland Maps, TCD
- DRI – Digital Repository of Ireland
- EEBO – Early English Books Online, Proquest
- EPPI - Enhanced Parliamentary Papers on Ireland
- Family History, NLI
- GeoHive – Ireland’s National Geospatial Data Hub
- GSI – Genealogical Society of Ireland
- Griffith’s Valuation, Ask About Ireland
- GSIHS - Group for the Study of Irish Historic Settlement
- Heritage Maps
- IHTA - Irish Historic Towns Atlas
- ISO – Irish Sagas Online, UCC
- ISOS - Irish Script on Screen
- Landed Estates, UG
- LOGAINM – Placenames Database of Ireland
- NBHS – National Built Heritage Service
- ODNB - Oxford Dictionary of National Biography
- RASCAL – Research and Special Collections Available Locally
- Thesaurus Linguae Hibernicae, UCD
- UCD Historic Maps Collection