The aim of Wikijunior is to produce age-appropriate non-fiction books for children from birth to age 12.
These books are richly illustrated with photographs, diagrams, sketches, and original drawings.
Wikijunior books are produced by a worldwide community of writers, teachers, students, and young people all working together.
The books present factual information that is verifiable. Users are invited to join in and write, edit, and rewrite each module and book to improve its content.
Wikijunior books are distributed free of charge under the terms of the Creative Commons Attribution/Share-alike License.
Wikiprofessional is the home to textbooks that are directed towards professionals, including professionals studying for specific professional or vocational exams.
Textbooks for school exams are in Wikistudy. Textbooks for university subjects are in Wikiversity.
Wikiquote is a free online compendium of quotations from notable people and creative works in every language, including sources (where known) and translations of non-English quotes.
Wiktionary is a collaborative project to produce a free, multilingual dictionary with definitions, etymologies, pronunciations, sample quotations, synonyms, antonyms and translations.
Today, encyclopedias, jetliners, operating systems, mutual funds, and many other items are being created by online teams numbering in the thousands or even millions.
While some fear the heaving growth of these massive online communities, Wikinomics proves this fear is folly.