Eth.rb vs Core API vs 0x
Build an ecosystem optimized for your goals while opening up new revenue streams.
Comparison Summary
Eth.rb, Core API and 0x each address unique challenges in the web3 ecosystem, offering complementary strengths for builders. A Ruby library to build, sign, and broadcast Ethereum transactions with full smart contract support. A Document Object Model for Web APIs designed to simplify API consumption and integration. 0x provides battle-tested APIs to embed fast, gasless, and deeply liquid crypto trading into decentralized applications. 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 | RPC Client for Execution Layer APIs, Ethereum Key-Pairs and Encrypted Keystores, Support for Multiple Ethereum Transaction Types | Dynamic API Discovery, Open Source Repositories | Swap API, Gasless API, Trade Analytics API, Multi-chain support, Developer dashboard |
| Chain Support |  |    +40 |    +9 |
| Best For | Infrastructure Developers, DeFi Developers | Infrastructure Developers, DeFi Developers | DeFi Developers, Infrastructure Developers |
| Pricing | |||
| Free Tier | Open Source | — | Starter |
| Paid Features | — | — | 1 paid tiers |
| Custom Plans | — | — | — |
Add a related tool
Related Tools
Explore web3 competitors and apps like Eth.rb.
Blockchain Data Indexing
SubQuery is a decentralized data indexing and RPC infrastructure platform that enables fast, flexible, and scalable access to blockchain data for Web3 applications.
Magic
Magic provides enterprise-grade, non-custodial wallet infrastructure and passwordless authentication APIs for seamless Web3 onboarding and wallet management.
Synapse Protocol
Synapse is an interchain messaging protocol and cross-chain bridge enabling decentralized applications to operate across multiple blockchains.
Functions
Gelato provides infrastructure and SDKs to build smart wallets, gasless transactions, and custom rollups with ERC-4337 & 7702 support across 100+ chains.
Hosted Hardhat
An Ethereum development environment for compiling, testing, debugging, and deploying smart contracts with advanced Solidity and TypeScript support.
QuickAlerts
QuickAlerts is a real-time blockchain event monitoring and alerting tool that delivers customizable notifications via webhooks.
Connext
Connext is a secure, fast modular interoperability protocol enabling cross-chain fund bridging and asynchronous Solidity development.
