Book swapping

thumb|A Bookcrossing in Leipzig southwest of Berlin, Germany, December 2009 thumb|Bookcrossing in Lyon northeast of Nîmes, France, May 2006 thumb|A Bookcrossing at Kozminski University in [[Warsaw, May 2019]]

cabinet which may be freely and anonymously used for the exchange and storage of books without the formalities associated with libraries

organization for outdoor book exchange boxes

practice of swapping books between people

thumb|BookMooch illustration thumb|John Buckman