NI VISA 1.0 can be downloaded from our website for free. The actual developer of the free software is Inventive Engineering. The most popular versions of the tool 5.0 and 1.0. This download was checked by our antivirus and was rated as malware free. The software is included in Development Tools.
From the developer:
The Virtual Instrument Software Architecture (VISA) is a standard for configuring, programming, and troubleshooting instrumentation systems comprising GPIB, VXI, PXI, Serial, Ethernet, and/or USB interfaces. VISA provides the programming interface between the hardware and development environments such as LabVIEW, LabWindows/CVI, and Measurement Studio for Microsoft Visual Studio.
You may want to check out more software, such as NI-VISA, NI-VISA Runtime or NI-FBUS Configurator, which might be similar to NI VISA.