Wikiquote is run by the non-profit Wikimedia Foundation, which operates several other multilingual and free-content projects:

Wiktionary
Dictionary and thesaurus
Wikibooks
Free textbooks and manuals
Wikipedia
The free encyclopedia
Wikisource
The free library
Wikispecies
Directory of species
Wikinews
Free content news source
Meta-Wiki
Wikimedia project coordination
Commons
Shared media repository
Wikiversity
Free learning resources
Wikidata
Free knowledge base
Wikivoyage
Open travel guide