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.
Slashdot Widget is leading in Internet & Telecom, People & Society, Religion & Spirituality, Shopping and 2 other categories.
Opta Widget is leading in most countries, including Spain, United Kingdom, Italy, Australia and 43 other countries.
Slashdot Widget hasn't got a lead over Opta Widget in any country.