Zality Labs is the studio of Harold Bray, a systems engineer with more than four decades in mission-critical software. The constant is fault tolerance: Tandem and HPE NonStop, Stratus, the payment networks at Visa and Bank of America, and fault-tolerant transaction hubs going back to Network Express. The kind of system where a dropped transaction is not an option and the customer is standing at the counter while it runs. IEEE member since 1982.

For the last several years that same discipline has been pointed at AI. Zality Labs is where the products live, and Mainsail is the flagship: an AI business-automation platform that connects to a company's real systems, Salesforce, the accounting ledger, the government and airline billing pipelines, and lets a language model operate them instead of just describing them. It shipped to its first production customer, Davenport Aviation, in February 2026.

NonStop.fyi turns the same idea into a domain expert for the world's fault-tolerant mainframes, answering from the manuals and citing the page behind every answer. The rest of the portfolio is the workbench: developer tools, the NX platform, and research bets. Some are already shipping. Some are still reserved ground for what comes next.