Wikipedia is a multilingual free online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and using a wiki-based editing system. Wikipedia is the largest and most-read reference work in history. It is consistently one of the 10 most popular websites ranked by Similarweb and formerly Alexa; as of 2022, Wikipedia was ranked the 5th most popular site in the world. It is hosted by the Wikimedia Foundation, an American non-profit organization funded mainly through donations. Wikipedia was launched by Jimmy Wales and Larry Sanger on January 15, 2001. Sanger coined its name as a blend of wiki and encyclopedia. Wales was influenced by the "spontaneous order" ideas associated with Friedrich Hayek and the Austrian School of economics after being exposed to these ideas by the libertarian economist Mark Thornton. Initially available only in English, versions in other languages were quickly developed.

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Research on automatic identification of important web sources of information on Wikipedia across various topics and languages. The study based on data from over 200 million references of Wikipedia articles and their quality measures.

Anonymous hacks China's emergency management site and a private satellite company Mino Space to retaliate for a Wikipedia edit war started by alleged "Chinese operatives"

Every Animal On The Wikipedia Page For "Apparent Death," Ranked By How Dead They Appear | Defector

Reliability in Time: Evaluating the Web Sources of Information on COVID-19 in Wikipedia across Various Language Editions from the Beginning of the Pandemic

Wikipedia tests AI for spotting contradictory claims in articles

Climate change: Conspiracy theories found on foreign-language Wikipedia

Canadian Nobel scientist's deletion from Wikipedia points to wider bias, study finds. Physicist Donna Strickland's case wasn't unique: A new study suggests why women's profiles get erased

Study shows that men who were born after the kindergarten cutoff date (i.e. those who were relatively older than their classmates) are 5-10% more likely to have a Wikipedia page

Where are the women on the Spanish-language Wikipedia site?

Global biodiversity awareness tracked with Wikipedia page views

Wikipedia has seen a spike in people editing pages during the pandemic

Towards a Systematic Approach to Sync Factual Data across Wikipedia, Wikidata and External Data Sources