Market Share by Top Websites

1 Flattr Button is leading in Top 100K Sites, Top 1M Sites and The Entire Web.

2 In terms of market share, UpSellit is clearly lagging behind, losing to Flattr Button in all segments.

Websites Categories

1 Flattr Button has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, Computer & Electronics, Business & Industry and 162 other categories.

2 UpSellit is leading in Finance, Credit, Loans & Mortgages, Health, Clothing and 27 other categories.


1 Flattr Button is leading in most countries, including Germany, United States, France, United Kingdom and 122 other countries.

2 UpSellit is leading in Trinidad and Tobago, Lebanon, Zambia, Barbados and 4 other countries.