Wikiwand - A beautiful new interface to Wikipedia
PIPL Professional People Search Engine - PIPL professional search is used to find the person behind an email,phone or social profile and covers over 3 Billion people worldwide.
V for Wiki - A beautifully designed Wikipedia app for iOS
Apache Lucene - High-performance, full-featured text search engine library written entirely in Java.
Wikipedia - Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.
WikiGalaxy - Explore wikipedia in 3d