The Free Knowledge Portal uses data from Wikidata: Q184226.
Source code is available on Github; Text is available under the terms of the Creative Commons CC0 License.
Wikimedia site icons ™ Wikimedia Foundation, Inc. (used here under the Trademark policy, section 3.6)

• Wikipedia icon by User:Jdforrester (WMF), Jonathan Hoefler: Public domain
• Reasonator icon by CristianCantoro: Creative Commons Attribution-ShareAlike 3.0 Unported license