Catawiki

Catawiki was founded by René Schoenmakers, a Dutch comic collector, and Marco Jansen, a Dutch developer. It went online on 10 September 2008 as an online wiki-based compendium of collector's catalogues. First focusing on comics, the database later covered items such as postage stamps, coins and telephone cards. The name "Catawiki" is a portmanteau of the words "catalogue" and "wiki".

Since 2011 Catawiki has been hosting auctions for thousands of different objects. The site was originally in Dutch, but was made available in English in 2011, in French and German in 2012, and in Spanish, Italian and Chinese in 2015.

Catawiki has been curating weekly auctions since 2011, across a number of categories such as art, books, curiosa, model trains, stamps, wine and classic cars. Catawiki's auctions are online-only. Bids are open for all to see. Winners pay what they bid via a secure payment service to receive the object from the seller. Catawiki operates a network of over 240 experts who value, authenticate and curate objects. The site makes money by charging a Buyer Protection Fee of 9% + €3 and the Seller Fee of 12.5% (ex VAT) of the sale price.