Mainframe modernization specialist providing 5X faster migration to Java with cloud-native applications and 65-85% cost savings.
Heirloom Computing is a global enterprise software company that partners with GSIs and CSPs to migrate mainframe workloads to cloud-native applications on any cloud. They provide a software platform, Heirloom, that replatforms and transforms mainframe workloads to cloud-native applications, delivering fast and low-risk transformation with significant cost savings.
Our take on Heirloom Computing
Heirloom Computing transforms mainframe limitations into competitive advantages through innovative migration approaches. The Palo Alto-based company delivers 5X faster modernization to Java with demonstrated cost savings of 65-85%.
Their transpilation technology converts mainframe code to Java while preserving business logic and enabling independent refactoring to idiomatic code—providing freedom to evolve systems without vendor lock-in. Client testimonials highlight strategic control over modernization paths and successful deployment to Oracle Cloud and other platforms.
Case studies demonstrate successful migrations across diverse organizations. The Avon Company achieved their imperative to decommission mainframes while retaining critical batch processing integrity. Another client deployed complex mainframe workloads to JVM in just 90 days through Heirloom's automated transformation approach.
Heirloom's no-excuses approach emphasizes that migration is about creating agile platforms that enable significant customer value enhancement, not just cost savings. Their technical expertise helps clients overcome the constraints of inflexible legacy systems to embrace rapid innovation and modern technology stack integration.
For enterprises seeking mainframe modernization with exceptional speed, proven cost savings, and freedom from vendor dependency, Heirloom Computing provides innovative approaches backed by demonstrated client success.
Verified credentials and recognition earned by Heirloom Computing
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This agency has a verified website presence.
LinkedIn Verified
This agency has a verified LinkedIn company page.
Rising Star
A promising new agency with a strong initial score.
15+ Years
Established in 2010. Over 15 years of experience.
Small Team
Small (11-50)
Rankings earned on AgencyCluster
Common questions about Heirloom Computing.
Heirloom Computing has earned rankings on 1 AgencyCluster list: Top 50 App Modernization & Legacy Migration. Their highest AgencyCluster Score is 61/100. Rankings are merit-based and determined by evidence across six evaluation pillars — agencies cannot pay for higher positions.
In our evaluation for App Modernization & Legacy Migration, Heirloom Computing scores 61/100 overall. Their strongest areas are Category Fit. Areas with room for improvement include Freshness.
Heirloom Computing was founded in 2010, giving them over a decade of experience in app modernization & legacy migration. In an industry where many agencies are less than 5 years old, 16+ years of sustained operations signals stability, client retention, and the ability to adapt through multiple technology cycles. Today, the team is small team.
Legacy assessment and modernization roadmap costs $20K–$60K. Application modernization projects range from $75K–$500K+ per major system. Enterprise modernization programs can span $500K–$2M+ across multiple systems. These are industry benchmarks for app modernization & legacy migration agencies at the level AgencyCluster curates. Actual pricing for Heirloom Computing will depend on project scope, timeline, and complexity — contact the agency directly for a custom quote.
Yes. Heirloom Computing has been vetted and verified by AgencyCluster's editorial team through a rigorous, multi-factor review process. Unlike self-serve directories, AgencyCluster does not accept automated submissions — every agency is evaluated manually before being published. Our vetting covers identity verification (website, LinkedIn, domain age), business legitimacy (years of operation, team size, registered presence), evidence of work (case studies, portfolio, client outcomes), reputation checks across third-party platforms, activeness and freshness of their online presence, and screening for red flags including misconduct, fraud, or misleading claims. Agencies that fail any critical check are not listed. For Heirloom Computing, verified signals include a functioning website, LinkedIn company profile, 16+ years of operating history (founded 2010), 1 earned ranking on curated top lists.
