Alchemy
Blockchain node infrastructure and developer APIs.
Infrastructure: RPC, Indexing
What can you build?
- Trading platform
- NFT marketplace
Free
Freemium
13 APIs
Dune Analytics
Community-driven blockchain analytics and SQL queries.
Analytics: Analytics, Market Data, Indexing
What can you build?
- Trading platform
- DeFi dashboard
Free
Freemium
Envio
Fast multichain indexer for custom pipelines and live events.
Data: Indexing, Analytics
What can you build?
- Custom indexers
- Real-time event tracking
Open Source
Free
Freemium
Hardhat
Ethereum development environment for local chains and scripts.
Open Source
Free
LayerZero
Omnichain messaging protocol for cross-chain apps.
Free
Freemium
Ponder
Local-first indexing framework for Ethereum app development.
Open Source
Free
RainbowKit
React wallet connection library with polished UX.
Wallets: Wallet Login, Embedded Wallets
What can you build?
- Wallet login system
- NFT marketplace
Open Source
Free
Tenderly
Transaction simulation, debugging, and monitoring for EVM chains.
Infrastructure: RPC, Analytics
What can you build?
- Transaction simulators
- Gas profilers
Free
Freemium
The Graph
Decentralized indexing for querying blockchain data via GraphQL.
Open Source
Free
Freemium
Uniswap SDK
Official SDK for Uniswap swaps, routing, and liquidity management.
DeFi Primitives: DeFi, Trading API
What can you build?
- Token swaps
- Liquidity managers
Open Source
Free
Viem
TypeScript Ethereum client for RPC, contracts, and transactions.
Open Source
Free
Wagmi
React hooks for Ethereum wallets, contracts, and chain state.
Developer Experience: Wallet Login
What can you build?
- Wallet UIs
- Contract interactions
Open Source
Free
WalletConnect
Open protocol connecting wallets to decentralized applications.
Authentication: Wallet Login, Passkeys
What can you build?
- Wallet login system
- DeFi dashboard
Open Source
Free
Freemium