.io is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Opentracker has better usage coverage in more websites categories. Including Business & Industry, Shopping, People & Society, Internet & Telecom and 151 other categories.
.io is leading in News & Media, Arts & Entertainment, Music & Audio, Newspapers and 30 other categories.
.io is leading in most countries, including Russia, Ukraine, Nigeria, Kazakhstan and 72 other countries.
Opentracker is leading in United States, United Kingdom, India, Germany and 52 other countries.