Some of the largest NFT (non-fungible token) marketplaces include:
OpenSea - a marketplace for buying and selling NFTs, including digital art, collectibles, and more.
Rarible - a marketplace for buying and selling NFTs, including digital art, collectibles, and more.
SuperRare - a marketplace for buying and selling digital art as NFTs.
KnownOrigin - a marketplace for buying and selling digital art as NFTs.
Foundation - a marketplace for buying and selling digital art as NFTs.
Cryptovoxels - a virtual world where users can buy and sell NFTs that represent virtual real estate.
Cryptokitties - a marketplace for buying and selling virtual cats as NFTs.
Decentraland - a virtual world where users can buy and sell NFTs that represent virtual real estate and other assets.
Axie Infinity - a marketplace for buying and selling virtual creatures called Axies as NFTs.
NBA Top Shot - a marketplace for buying and selling officially licensed NBA collectibles as NFTs.
MakersPlace - a marketplace for buying and selling digital art, collectibles, and other unique digital items as NFTs.
Zora - a marketplace for buying and selling unique digital content, including music, writing, and more, as NFTs.
Dapper Labs - the company behind CryptoKitties, Dapper Labs also operates a number of other NFT marketplaces, including Cheeze Wizards, which allows users to buy and sell virtual wizards as NFTs, and NBA Top Shot, a marketplace for buying and selling officially licensed NBA collectibles as NFTs.
Aavegotchi - a marketplace for buying and selling virtual creatures called Aavegotchis as NFTs.
My Crypto Heroes - a marketplace for buying and selling virtual heroes and other assets as NFTs.
CryptoSpaceX - a virtual world where users can buy and sell NFTs that represent virtual real estate and other assets.
CryptoCollectibles - a marketplace for buying and selling various types of digital collectibles as NFTs.
EthernityChain - a marketplace for buying and selling unique digital items, including art, music, and more, as NFTs.
Ethernity - a virtual world where users can buy and sell NFTs that represent virtual real estate and other assets.
The Sandbox - a virtual world where users can buy and sell NFTs that represent virtual real estate and other assets.

