Flattr Button
1,501 websites

Flattr Button is free to use

http://developers.flattr.net/button/

The first step of in using the embedded button is loading it. The url to the javascript is http://api.flattr.com/js/0.6/load.js . The embed script is loaded by placing the ...

VS

Qualifio
60 websites

Qualifio costs money

http://www.qualifio.com

Qualifio provides a wide range of interactions : sweepstakes, quizzes, polls, photo & video contests, personality tests and more.

Market Share by Top Websites

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

2 Qualifio is leading in Top 10K Sites.

Websites Categories

1 Flattr Button has better usage coverage in more websites categories. Including Computers Electronics & Technology, Arts & Entertainment, Games, Reference Materials and 19 other categories.

2 Qualifio hasn't got a lead over Flattr Button in any websites category.

Geography

1 Flattr Button is leading in most countries, including Germany, United States, France, United Kingdom and 80 other countries.

2 Qualifio hasn't got a lead over Flattr Button in any country.