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, Business & Industry and 25 other categories.
SimilarWeb Traffic Sources is leading in Internet & Telecom, Software, Computer & Electronics, Web Hosting and 15 other categories.
Opta Widget is leading in most countries, including Spain, United Kingdom, Italy, Australia and 36 other countries.
SimilarWeb Traffic Sources is leading in Turkey, Japan, Brazil, Thailand and 11 other countries.