In terms of market share, Echo is clearly lagging behind, losing to Slashdot Widget in all segments.
Echo has better usage coverage in more websites categories. Including News & Media, Arts & Entertainment, Games, Science and 10 other categories.
Slashdot Widget is leading in Internet & Telecom, People & Society, Shopping, Clothing and 7 other categories.
Echo is leading in most countries, including United States, Germany, Japan and Russia.
Slashdot Widget is leading in United Kingdom.