Quick Answer: Blur is a professional NFT marketplace and aggregator built for active traders, launched in October 2022. It charges 0% marketplace fees (vs OpenSea’s 0.5%), offers real-time floor analytics, batch buying and listing, collection-level bids, and the Blend peer-to-peer NFT lending protocol — all on Ethereum only. In 2026, Blur remains the dominant NFT marketplace by trader volume per active user, though OpenSea reclaimed the broader market after its SEA token announcement in February 2025 drove its share from 25% to 71.5% overnight. Blur’s BLUR token has declined from an ATH of $5.02 to approximately $0.02 as of May 2026.