Debuting this week and featuring data compiled in November, Libscore shows jQuery used on the home pages of 634,872 of the top 1 million websites, with the $.ui library a distant second, in use at 176,543 sites, and the FB library third, claiming 170,931 sites. JQuery’s popularity has been established previously, with a prior estimate that it was in use on more than 61 percent of all websites.
For developers, Libscore provides a transparent view into usage of a library, Shapiro said. Until now, developers looking to assess library usage have been limited to looking at star counts on GitHub. "Of course, that star count is very limited and indirect," according to Shapiro. "It doesn’t really tell you anything other than how many people decided to hit the star button." As such, Libscore could serve to motivate developers by giving them tangible feedback on who is using their work, he said.
Libscore was launched as an open source project in partnership with payments processor Stripe.com and cloud services provider DigitalOcean.