Ok, I thought you are searching for a free LabView alternative. In this case Python is great I think. Many things you have to buy for LabView and Matlab are already there and for free. Ocatave is also nice, but much more limited in interfaces (like IP Sockets and so on). And I don't like programming Matlab
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C is great for real software or something on a microcontroller. BUT, if you want to setup a QUICK measurement, than LabView is great, followed by Python (just my opinion).
What kind of ready software are you searching? Only setting up the meter and put the results in a file? In most cases there is more to do, to setup a real measurement. Controlling calibrators/sources, take measurements from multiple meters and so on. Therefore, I think there is no real way around a programming language. You can use BenchVue, but that isn't much easier to setup than clicking something together with LabView.