Not every piece of software is a vape-delivery-via-drone-app. I have about a dozen small very specific scientific 'calculators' (only the windows/linux ones th

Not every piece of software is a vape-delivery-via-drone-app. I have about a dozen small very specific scientific 'calculators' (only the windows/linux ones that still run, the mac ones are all dead which is a darn shame since there were some jewels out there) that were written by researchers 10-20 years ago and never updated since. They haven't been touched by the original developer in years, in fact many of their host websites have been lost to the ages so they exist only through sharing on forums and whatnot. But, since they do not need any sort of connection to the outside world (times were simpler back then you see...) they still run fine in compatibility mode. For some of them their functionality can be replicated with modern software (probably in a web app or something), but the original tools still work perfectly for their jobs and are still useful today. Don't even get me started on all of the equipment which is stuck running windows 98 because of the serial port library used to communicate with the equipment was using the dos api... examples: Psst! - https://www.st-andrews.ac.uk/~psst/ https://www.st-andrews.ac.uk/~psst/ Laser Line - http://www.skywise711.com/laserline/ http://www.skywise711.com/laserline/ I also use a number of paid tools that I paid for back in the '90s or early 2000's and haven't felt compelled to 'upgrade'. They run great and give me the answers I need, so until the vendor has added actual useful features (instead of reskinning them with a flat/metro interface...) I see no reason to upgrade.