1829–1943
Historic Map Viewer
Ordnance Survey Ireland maps from 1829 to 1943. Slide through 114 years of the island with overlay modes and search.
ViteMapLibreOSi TilesTypeScript
Available
Donal O Callaghan
AI Engineer. Builder. Ireland.
Tools, systems, and useful software. Quietly shipped, clearly made.
About
Short version.
I build tools with AI that solve real problems, from civic data platforms to personal knowledge systems. I ship fast, think big, and work in public. Based in Ireland, available for interesting work.
Work