Wikiquote

Wikiquote is one of a family of wiki-based projects run by the Wikimedia Foundation, running on MediaWiki software. Based on an idea by Daniel Alston and implemented by Brion Vibber, the goal of the project, which began as an outgrowth to Wikipedia Famous Quotations, is to produce collaboratively a vast reference of quotations from prominent people, books, films, proverbs, etc. and to be as proper as possible in regard to the details of the quotations and also providing the appropriate human reference of the quotation.
Initially, the project was created solely in English in July 2003; a later expansion to include additional languages was started in July 2004. As of , there are active Wikiquote sites for languages comprising a total of articles and recently active editors.
History.
The Wikiquote site originated in 2003. The article creation milestones are taken from WikiStats.
Operation.
Though there are many online collections of quotations, Wikiquote is distinguished by being among the few that provide an opportunity for visitors to contribute and the very few which strive to provide exact sources for each quotation as well as corrections of misattributed quotations. Wikiquote pages are cross-linked to articles about the notable personalities on Wikipedia.
Multi-lingual cooperation.
As of , there are Wikiquote sites for languages of which are active and are closed. The active sites have articles and the closed sites have articles. There are registered users of which are recently active. 
The top ten Wikiquote language projects by mainspace article count:
For a complete list with totals see Wikimedia Statistics: 
Use in experiments.
It can be possible to utilise Wikiquote as a text corpus for language experiments. The University of Wroclaw team entering Conversational Intelligence Challenge of the 2017 Conference on Neural Information Processing Systems (NIPS 2017) used Wikiquote to produce a conversational talker module for extraction of rare words.
Reception.
Wikiquote has been suggested as "a great starting point for a quotation search" with only quotes with sourced citations being available. It is also noted as a source from frequent misquotes and their possible origins. It can be used for analysis to produce claims such as "Albert Einstein is probably the most quoted figure of our time".