nissleay
nissleay is a framework component bundled with National Instruments VISA (Virtual Instrument Software Architecture), the industry-standard API for controlling test and measurement instruments over GPIB, USB, Ethernet and serial connections. VISA enables software developers and engineers to write portable code that communicates with oscilloscopes, multimeters, function generators, data acquisition devices and other lab equipment from any vendor. The nissleay framework is part of NI-VISA's underlying infrastructure and is not separately installed or configured by end users.
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1 suggestionnissleay is a framework component embedded within National Instruments' NI-VISA driver and runtime package — it is not a standalone app and cannot be updated separately. To ensure your VISA installation includes a native Apple Silicon build of this framework (if available), update NI-VISA itself through National Instruments' official driver download page or the NI Package Manager. Check the National Instruments support site for your specific instrument drivers and VISA version to confirm whether native Apple Silicon builds have been released; as of mid-2026, NI has been gradually rolling out native ARM support for their tools and drivers. If your copy of NI-VISA is still Intel-only, downloading and reinstalling the latest version from National Instruments will update all bundled frameworks including nissleay. Keep in mind that Apple is removing Rosetta 2 from macOS in September 2028, so ensure you have native-compatible versions of both NI-VISA and any instrument-specific drivers well before that deadline.
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