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OP 29 March, 2023 - 07:35 PM (This post was last modified: 29 March, 2023 - 07:36 PM by Silard. Edited 1 time in total. Edit Reason: Fixed one line. )
Ethereum - Polygon - Bitcoin Networks:

1. OpenSea (https://opensea.io/)
2. Magic Eden (https://magiceden.io/)

Solana Network:

1. Hadeswap (https://www.hadeswap.com/)
2. Hyperspace (https://hyperspace.xyz/)

Cardano Network:

1. jpg.store (https://www.jpg.store/)

Bonus (Multiple Networks):

1. tofuNFT (https://tofunft.com/)
2. NFTrade (https://nftrade.com/)