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 41 other categories.
SimilarWeb Traffic Sources is leading in Internet & Telecom, Computer & Electronics, Software, Online Marketing and 20 other categories.
Opta Widget is leading in most countries, including United Kingdom, Spain, Italy, United States and 58 other countries.
SimilarWeb Traffic Sources is leading in India, Romania, Serbia, Bangladesh and 3 other countries.