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Marketplace

Tools and integrations for building on blockchain

362 items
Developer tool
O1 Labs 1 logo

o1js

Zero-knowledge tooling for proofs, privacy, scaling, and verification. A practical layer for safer smart contract and protocol operations.

Developer tool
Coinbase logo

OnchainKit

OnchainKit: Developer library for Web3 apps, smart contracts, wallets, and RPC. It keeps the development layer close to the application code.

Ethereum BNB Smart Chain Polygon Arbitrum +3 more
Application
Ondofinance logo

Ondo Finance

Ondo Finance: DeFi protocol or app for swaps, lending, staking, liquidity, or yield. It is most useful when the product needs a clear way to move valu

Ethereum
Developer tool
Ethereum Optimism logo

OP Stack

OP Stack: Rollup, appchain, or modular blockchain infrastructure tooling. It belongs where protocol design and network selection drive the build.

Base Optimism
Developer tool
Projectopensea logo

OpenSea API

OpenSea API: NFT infrastructure or application for minting, metadata, and marketplaces.

Ethereum Solana BNB Smart Chain Polygon +5 more
Developer tool
Openzeppelin 4 logo

OpenZeppelin Contracts

Reusable Solidity smart contract libraries for secure EVM development. It keeps the development layer close to the application code.

Ethereum BNB Smart Chain Polygon Arbitrum +3 more
Developer tool
Openzeppelin logo

OpenZeppelin Defender

Monitoring and transaction infrastructure for onchain operations. It keeps critical checks closer to build and production workflows.

Ethereum BNB Smart Chain Polygon Arbitrum +3 more
Service
Ethereum Optimism logo

Optimism

Optimism: Blockchain network or protocol ecosystem for Web3 applications. A focused choice for applications built around a specific chain environment.

Optimism
Application
Orca So logo

Orca

Orca: DeFi protocol or app for swaps, lending, staking, liquidity, or yield. It belongs in applications built around financial actions and positions.

Solana
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