

Build an ecosystem optimized for your goals while opening up new revenue streams.
Web3.js, Coinbase and Core API each address unique challenges in the web3 ecosystem, offering complementary strengths for builders. A JavaScript library providing a comprehensive API to interact with Ethereum and EVM-compatible blockchains. A comprehensive suite of APIs, SDKs, and developer tools from Coinbase to build onchain applications and integrate crypto services. A Document Object Model for Web APIs designed to simplify API consumption and integration. Together, these tools serve different but overlapping user needs, making them valuable components in a modern web3 development stack.
| At a Glance | |||
| Composability | |||
| Cross-Chain | |||
| Customizability | |||
| Developer Support | |||
| Ease of Integration | |||
| Performance | |||
| Key Features | |||
| Core Capabilities | Smart contract interaction, Event subscriptions, Account and transaction management, Ethereum Name Service (ENS) support, Utility helpers | Super Pay App, Onramp Demo App, AI Server Wallet | Dynamic API Discovery, Open Source Repositories |
| Chain Support | +84 | +40 | |
| Best For | DeFi Developers, Infrastructure Developers | DeFi Developers, Financial Institutions | Infrastructure Developers, DeFi Developers |
| Pricing | |||
| Free Tier | Free | Custom | — |
| Paid Features | — | — | — |
| Custom Plans | — | — | — |
Explore web3 competitors and apps like Web3.js.




