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 22 other categories.
SimilarWeb Traffic Sources is leading in Internet & Telecom, Software, Computer & Electronics, Search Engine and 9 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 India, Hungary, Thailand, Romania and 7 other countries.