World of Books is an online retailer of used books and other media.

Knihobot is an online marketplace for buying and selling used books in the Czech Republic.

Antikvariát u stromu is an online bookstore for book lovers and is used by customers looking for second-hand books.

PBFA is the best association for antique books and is used by collectors and sellers of rare and second-hand books.

2nd & Charles is a retail company that specializes in selling second-hand books, video games, music, movies, and collectibles.

TAAZE is the best online bookstore for second-hand books and is used by avid readers in Taiwan.

Studiesalg.dk is an online marketplace for buying and selling used textbooks, primarily used by students in Denmark.