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

Swoop
138 websites

Swoop offers both free and paid options

http://www.swoop.com

Swoop is a Native Advertising service that seamlessly integrates relevant information about products and services – at times in the form of sponsored content or advertising – into the content that consumers are engaged with online. Through...

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, Swoop 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 Computers Electronics & Technology, Arts & Entertainment, Games, Reference Materials and 18 other categories.

2 Swoop is leading in Food & Drink and Vehicles.

Geography

1 Flattr Button is leading in most countries, including Germany, United States, France, United Kingdom and 79 other countries.

2 Swoop is leading in Malta, Nigeria and Slovenia.