County Offaly (Kings)
Co. Offaly Civil Parishes Map
Co. Offaly Roman Catholic Parishes Map
Co. Offaly GENUKI
Co. Offaly IGP
Irish Midlands Ancestry Co. Offaly (RootsIreland)
Offaly County Council - Local Studies and Archive Service
Special Ingredients - Record Finding Aids
Co. Offaly Church of Ireland Parish Records Finder
Co. Offaly Registry of Deeds Townland Indexes Timelines
Offaly History Archives has an online catalogue to various resources that exist in different repositories around the county. They also have some digital resources in the form of estate papers relevant to Co. Offaly, the originals of which have to be consulted in UK archives as described.
See Offaly History Archives Catalogue for more details.