Market Share by Top Websites

1 Flattr Button is leading in Top 10K Sites, 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, Health, Credit, Loans & Mortgages, Products & Shopping and 27 other categories.


1 Flattr Button is leading in most countries, including Germany, United States, France, United Kingdom and 110 other countries.

2 UpSellit is leading in Trinidad and Tobago, Andorra, Barbados, Panama and 2 other countries.