HEIRLOOM COMPUTING LIMITED
Company Details
Important Dates
Industry Classification (NACE)
Registered Address
4 Pembroke Street Upper
Dublin 2
, Ireland
D02VN24
Contact Details
Company Website
Company Description
Heirloom Computing Limited delivers the fastest, lowest‑risk migration solution for IBM mainframe applications, turning legacy estates into cloud‑native Java services that run on‑premise, in any public cloud or on IBM Z. By combining re‑platforming and refactoring in a single framework, Heirloom gives organisations full control over the pace and scope of their modernisation, while eliminating vendor lock‑in and cutting project risk dramatically.
The company’s multi‑award‑winning platform accelerates time‑to‑value, typically delivering operational savings of at least 65 % and a return on investment within months rather than years. Its service‑agnostic approach lets customers deploy once and run anywhere, providing the flexibility to optimise costs and performance as business priorities evolve. Heirloom’s solution is already proven in production at some of the world’s largest enterprises, enabling them to transform inflexible mainframe systems into agile, scalable business platforms that integrate seamlessly with modern technology stacks.
Heirloom’s clients consistently praise the freedom and strategic control the solution offers, highlighting how the transpiled Java code can be further refactored into independent, idiomatic applications without being tied to any single vendor. This makes Heirloom the go‑to partner for organisations seeking a rapid, cost‑effective path from legacy mainframe workloads to a future‑ready, platform‑agnostic architecture.