# OpenSea > OpenSea is a marketplace for digital items OpenSea helps users buy, sell, and create NFTs through a decentralized marketplace supporting multiple blockchains. OpenSea provides a platform for trading non-fungible tokens across multiple blockchains. Users can discover, create, buy, and sell NFTs through peer-to-peer transactions secured by smart contracts. The marketplace supports multiple blockchains and features gas-free minting options. - Type: Company - Sector: NFTs - Status: Active - Founded: 2017-12-01 - Profile: https://thegrid.id/profiles/opensea_io ## Products - [OpenSea Marketplace](https://thegrid.id/profiles/opensea_io): OpenSea Marketplace provides NFT trading functionality through an accessible interface, enabling discovery, buying, selling, and creation of NFTs across multiple blockchains. (NFT Marketplace, Live, Main Product) - [OS2](https://thegrid.id/profiles/opensea_io): OS2 expands OpenSea's functionality to include token trading through integrated liquidity aggregators, enabling cross-chain purchases without manual bridging while maintaining NFT marketplace capabilities. (DEX Aggregator , Live) - [OpenSea API](https://thegrid.id/profiles/opensea_io): OpenSea API provides programmatic access to marketplace data and functions, allowing developers to fetch NFT metadata, create listings, and make offers through standard HTTP requests. (Developer Tooling, Live) - [OpenSea Stream API](https://thegrid.id/profiles/opensea_io): OpenSea Stream API enables real-time access to marketplace events through WebSocket connections, allowing applications to receive instant updates on listings, sales, and transfers. (OnChain Data API, Live) - [OpenSea SDK](https://thegrid.id/profiles/opensea_io): OpenSea SDK provides JavaScript libraries for interacting with the OpenSea marketplace, simplifying integration of buying, selling, and bidding functions into third-party applications. (Developer Tooling, Live) - [Seaport Protocol](https://thegrid.id/profiles/opensea_io): Seaport Protocol enables decentralized exchange of digital assets through a flexible system of order fulfillment, supporting advanced trading operations with optimized gas efficiency. (Developer Tooling, Live) - [SeaDrop](https://thegrid.id/profiles/opensea_io): SeaDrop facilitates NFT primary drops through configurable smart contracts, enabling creators to launch collections with customizable minting phases, allowlists, and royalty enforcement. (NFT Issuance Platform, Live) ## Assets - [SEA (SEA)](https://thegrid.id/profiles/opensea_io): SEA is the utility and governance token of OpenSea. It is used to reward platform activity, participate in governance decisions, and reduce transaction fees. At launch, OpenSea will allocate 50% of its platform revenue toward buying back SEA tokens from the market, creating continuous economic pressure tied directly to the marketplace's trading volume. (Utility) ## Links - [Main](https://opensea.io) - [Blog](https://opensea.io/blog) - [Documentation](https://docs.opensea.io) - [Privacy policy](https://opensea.io/privacy) - [Terms of Service](https://opensea.io/tos) - [Twitter / X](https://x.com/opensea) - [Discord](https://discord.com/invite/opensea) - [GitHub](https://github.com/ProjectOpenSea) ## Legal This data is provided under two licensing models. Model 1 - open data. The open data core is licensed under the Open Database License (ODbL) — a copyleft/share-alike license allowing free use, modification, and sharing for any purpose. 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