Opta Widget is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Opta Widget has better usage coverage in more websites categories. Including Sports, Soccer, News & Media, Newspapers and 22 other categories.
SimilarWeb Traffic Sources is leading in Internet & Telecom, Software, Computer & Electronics, Search Engine and 11 other categories.
Opta Widget is leading in most countries, including Spain, United Kingdom, Italy, Australia and 39 other countries.
SimilarWeb Traffic Sources is leading in Bangladesh, India, Poland, Korea Republic and 5 other countries.