I thought libraries could be technologies. If that's wrong, then I used the wrong word. I probably characterized the list wrong anyway, as you've pointed out,

I thought libraries could be technologies. If that's wrong, then I used the wrong word. I probably characterized the list wrong anyway, as you've pointed out, since HTML decidedly has not outlived its usefulness. Perhaps it's a list of web things prominently used 15 years ago. I would normally use "technologies" here, but it seems we have a difference of definition.