[Mooty]

No one mentions the fact that jQuery is still used in Wordpress (33% of all websites) everywhere and (as far as I know) in the last theme version they provided this year. Which makes it somehow the biggest library around in terms of usage. I'm still confused why people needs node/react or vue to achieve simple thing that back in the days where pretty easy to do with basic php/jquery. Simplicity in coding was better at the time.

[KptMarchewa]

The raw count of websites, aka copies of code sitting on some server means nothing, and is bad metric. What matters, is either website view count, or some metric of developer time spend on developing those websites.

[aheckler]

I think the percentage that the GP is referencing is from W3Techs [0]. It's currently 39.7% in fact, and that's only looking at the top 10 million websites [1], so it's not just a simple installation count across all sites ever created.

[0] https://w3techs.com/

[1] https://w3techs.com/technologies