Network infrastructure

Alloy is a set of libraries that provides types and RPC client implementations for Ethereum.

Peer-to-Peer Databases for the Decentralized Web

go-libp2p is the canonical Go implementation of libp2p, packaging transports, identify, DHT, and GossipSub modules relied on by Prysm, Lotus, Celestia, and other large-scale clients that need production-grade peer discovery and messaging.

js-libp2p is the JavaScript implementation of libp2p transports, security, pubsub, and discovery-used by Farcaster hubs, Lodestar-related tooling, and other off-chain coordination stacks.

eRPC sits in front of your RPC providers to add caching, failover, and routing tuned for read-heavy workloads like dashboards, indexers, and multi-tenant backends.

An Ethereum Node built to run in Browser, Bun, Deno, and Node.js

Alchemy is a developer platform for building Ethereum and EVM applications with node infrastructure, APIs, and SDKs.

Stereum is a GUI-driven installer for syncing Ethereum and Optimism nodes locally and exposing your own JSON-RPC and websocket endpoints once blocks are current.

dRPC is a hosted RPC service that spreads JSON-RPC, WebSocket, and REST traffic across independent node providers on Ethereum, its L2s, and 200+ other networks. It covers archive data, MEV-protected transaction endpoints, per-key rate limits, and usage dashboards, so reach for it when you want managed endpoints with provider redundancy instead of running nodes yourself.

NodeCore is a self-hosted RPC load balancer in Go that sits in front of several blockchain API providers and scores upstreams on latency, error rate, and availability to pick one per request. It layers caching, request hedging, retries, per-method rate limiting, and quorum verification over JSON-RPC, WebSocket, and REST interfaces, so reach for it when you run your own RPC cluster and want failover across providers rather than a single endpoint.

A non-blocking UTP library in Java that avoids defining the transportation layer. Ready to be used using UDP or discv5.

https://x.com/0xbloctopusBloctopus is building open-source dev tooling using Kurtosis that can spin up any web3 infrastructure on-demand. Through various kurtosis packages, we already support many blockchains, cross-chain protocols, oracles, wallet infra, and indexers.

Hermes listens to libp2p gossipsub traffic so you can measure propagation latency and overhead when tuning Ethereum consensus or similar peer networks.

Infura provides Ethereum and EVM RPC infrastructure and APIs used by wallets and dapps for blockchain connectivity.

evm-rpcs-list is a small npm package that bundles chain metadata and public RPC endpoints for many EVM networks sourced from chainlist.org so scripts can import a single JSON map instead of hardcoding endpoints.

Ponder is an indexing framework for crypto apps with an emphasis on fast refresh and developer ergonomics when you are serving fresh chain data to a product backend or frontend.

rindexer is an app-focused indexer framework with GraphQL and Postgres ergonomics when you need reliable chain-to-API pipelines without bespoke ETL glue.

Envio is a multichain indexing framework with TypeScript, JavaScript, or ReScript handlers that syncs over HyperSync rather than RPC when you need one Postgres-backed GraphQL API across several EVM chains.

Blockflow exposes chain data and HTTP-style APIs so backends can query events and account state with less bespoke indexer code than rolling everything from raw RPC.

DefiLlama is an open analytics collective best known for transparent TVL dashboards, a DEX meta-aggregator, and LlamaZip, a swap router tuned for optimistic rollups that helps traders find efficient routes across fragmented liquidity.

Ethernal is an open-source block explorer you can self-host for any EVM chain, with APIs and UI hooks for faucets, DEX widgets, custom post-processing, NFT galleries, and verification flows.

Blockscout is an open-source, self-hostable block explorer for EVM networks, offering contract verification, APIs, and developer tooling for chains and rollups.

Blobscan is an explorer and API for EIP-4844 blobs-decoding, analytics, and deployment charts aimed at rollup teams operating blob-capable infrastructure.

Sourcify is a decentralized and open-source smart contract verification service

growthepie.xyz is an analytics site for Ethereum rollups that surfaces fundamentals, blockspace usage, economics, data-availability metrics, and application-level dashboards.

A blazingly fast, local, Ethereum block explorer built on top of Erigon for EVM chains

ProbeLab's Nebula crawler snapshots Ethereum's execution-layer peer graph each week; use the published metrics when you are tuning discovery, connectivity, or client defaults.

Etherscan is an Ethereum block explorer and API platform for contract verification, transaction inspection, and onchain data access.

Herd Explorer is an AI-assisted Ethereum explorer: search contracts and tokens, then ask the built-in assistant for quick explanations of functions, events, and how pieces connect.

Open-source portfolio tracker and explorer interface for the decentralized web. https://blockhead.info

4337 Block Explorer

NFTScan is an NFT explorer and data API that developers use to search NFT collections, ownership, and transaction history across Ethereum and other EVM networks.

Chainlink decentralized oracle networks provide tamper-proof inputs, outputs, and computations to support advanced smart contracts on any blockchain.

The Pyth network is a first-party financial oracle network designed to publish continuous real-world data onchain in a tamper-resistant, decentralized, and self-sustainable environment.

UMA's optimistic oracle allows smart contracts to quickly receive any kind of data for different applications, including insurance, financial derivatives, and prediction markets.

API3 DAO is delivering first-party oracle solutions that deliver greater source transparency, security and scalability in a decentralized solution for smart contracts.

Witnet is a permissionless, decentralized, and censorship-resistant oracle helping smart contracts to react to real world events with strong crypto-economic guarantees.

Band Protocol is a cross-chain data oracle platform that aggregates and connects real-world data and APIs to smart contracts.

Chronicle overcomes the current limitations of transferring data onchain by developing truly scalable, cost-efficient, decentralized, and verifiable oracles.

RedStone is a decentralized modular oracle that provides gas-optimized data feeds. It specializes in offering price feeds for emerging assets, such as liquid staking tokens (LSTs), liquid restaking tokens (LRTs), and Bitcoin staking derivatives.

Gas Network publishes onchain gas price reference feeds aggregated from multiple data sources so wallets, paymasters, and automation scripts can read consistent fee hints across dozens of EVM chains including major L2s.

Tellor is a transparent and permissionless oracle protocol for your smart contract to easily get any data whenever it needs it.

Diffuse Data Feeds deliver verifiable, low-latency price streams to any EVM L1 or L2 by combining Diffuse's zkServerless proving layer with oracle infrastructure tuned for DeFi workloads that need trustworthy updates without trusted third-party operators.

One API to swap, bridge, and zap across all major blockchains and protocols. Enable trading across all DEX aggregators, bridges, and intent-systems and save hundreds of developer hours.

deBridge is DeFi's internet of liquidity, enabling real-time movement of assets and information across the DeFi landscape. Without the bottlenecks and risks of liquidity pools, deBridge can power all type of cross-chain interactions with deep liquidity, tight spreads, and guaranteed rates.

Daimo Pay lets users interact with your app using any token on any chain - no bridging, no swapping, no friction. Integrate our SDK in 15 minutes to accept deposits or execute transactions in your app with any token, from any chain, using any wallet or exchange.

Decent enables cross-chain swaps and 1-click transactions with any token across chains.

Cross-Chain Super-App for effortless Multi-Chain Token Movement, Swaps and Art Performance. Powered by Layer.Zero.

Router is an cross chain infraproject Router Nitro is a trustless, ultra-low latency bridge built using Router chain's middleware construct. It transfers user funds across chains in less than 30 seconds, and is more than 20% cheaper than the next cheapest bridge in the market. It currently supports 19 chains:

Use Superbeam when you are building on the Superchain and want one TypeScript client for cross-chain balances, sweeps, and contract calls instead of wiring each OP Stack deployment by hand.

Titan Layer is a cross-chain operations console with Hyperlane-based bridging helpers and deployment shortcuts across major L2s when you are moving assets or contracts between networks.

Stargate Finance is a composable liquidity transport protocol that lets users and dapps move native assets across chains with unified pools and instant finality guarantees, positioning itself as core routing infrastructure for omnichain DeFi.

Unruggable Labs builds open infrastructure for ENS-style naming on rollups, including Unruggable Gateways that fetch rollup state proofs and verify them on Ethereum L1 so clients can resolve names trustlessly as L2s scale.

OpenOcean is a DEX aggregator API and UI for finding swap routes across a large set of EVM chains when you want price-aware routing without integrating each venue separately.

IPFS is content-addressed peer storage for NFT metadata, governance payloads, dapp frontends, and other assets you want off-chain but verifiable-linked from Ethereum or rollups.