WikiNodes is an app for the Apple iPad built by IDEA.org.
[1] WikiNodes was the first tablet app for browsing Wikipedia using a radial tree approach to visualize how articles and subsections of articles are interrelated.
[2] The app uses the SpicyNodes visualization technique which was awarded a "best for teaching and learning" award in 2011 from American Association of School Librarians (AASL),[3] and voted #edchat's 35 Best Web 2.0 Classroom Tools in 2010.
[4] The user interface is based on two display modes: As of June 2011, the app supports the 36 top Wikipedia languages (by number of articles).
[10] It has been favorably covered by several bloggers, including those in the references below.