Tool directory
Search, filter, and browse free and freemium tools across Web3, fintech, AI, and developer categories.
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0x Protocol
Swap aggregator protocol and APIs for DEX liquidity.
Aave SDK
SDK and APIs for Aave lending markets and position management.
Alby
Lightning wallet API for micropayments and web monetization.
Alchemy
Blockchain node infrastructure and developer APIs.
Anchor
Solana development framework for programs, tests, and IDLs.
Ankr
Multichain RPC and staking infrastructure for dapps.
API3
First-party oracle network with dAPI feeds and Airnode integrations.
Aptos SDK
Official Aptos SDK for Move contracts, accounts, and transactions.
Arweave
Permanent decentralized storage for immutable media and docs.
Axelar
Cross-chain SDK for bridging assets and interchain dapps.
Aztec
Private smart contracts and shielded execution on Ethereum.
Biconomy
Transaction infrastructure for gasless UX and bundler APIs.
Blast API
Free-tier multichain RPC for low-latency applications.
Capsule
Embedded wallet SDK for in-app wallets and gasless UX.
Ceramic
Decentralized data network for portable user profiles.
Chainalysis
Blockchain analytics and compliance screening tools.
Chainstack
Managed blockchain nodes and dedicated RPC endpoints.
Chronicle
Decentralized oracle network for price feeds and RWA data.
Circle
USDC issuance, treasury, and programmable wallet APIs.
Coinbase AgentKit
Toolkit for building AI agents with wallet and onchain actions.
CosmJS
TypeScript client for Cosmos SDK chains and IBC transfers.
Defined.fi
DEX analytics API for token screeners and trading dashboards.
Dialect
Solana messaging and notification rails for wallets and apps.
Dune Analytics
Community-driven blockchain analytics and SQL queries.
Dynamic
Wallet and auth SDK for multi-wallet login and gated dapp access.
Eliza
Open agent framework for AI assistants and onchain automation.
ENS
Ethereum Name Service for human-readable onchain identity.
Envio
Fast multichain indexer for custom pipelines and live events.
Farcaster
Decentralized social protocol for feeds, frames, and mini apps.
Foundry
Blazing fast Solidity toolkit for testing and deployment.
Gaia
Decentralized AI network for private nodes and agent backends.
Gitcoin Passport
Identity scoring for sybil resistance and fair airdrops.
Goldsky
Subgraph hosting and mirror pipelines for live on-chain data.
Hardhat
Ethereum development environment for local chains and scripts.
Helius
Solana RPC, webhooks, and enriched transaction APIs.
Hugging Face
Model hosting, inference APIs, and ML community hub.
Hyperliquid
High-performance perpetuals exchange with public API.
Immunefi
Bug bounty and audit platform for Web3 protocols.
IPFS
Decentralized storage protocol for content-addressed files.
Jupiter SDK
Solana swap aggregator SDK for routing and DCA strategies.
LayerZero
Omnichain messaging protocol for cross-chain apps.
Lighthouse
IPFS and Filecoin storage with encryption for Web3 assets.
LiteLLM
Unified API proxy for 100+ LLM providers.
LND
Lightning Network daemon for channels, invoices, and Bitcoin payments.
Marble
Card issuing and payment card infrastructure APIs.
Metaplex
NFT standard and SDK for digital assets on Solana.
MoonPay
Global crypto onramp for fiat gateways and token purchases.
Mysten Labs SDK
Official Sui TypeScript SDK for objects, transactions, and wallets.
Nansen
Wallet intelligence and smart-money analytics for onchain research.
Nodit
Multichain RPC and indexing with Aptos-first developer APIs.
Ollama
Run large language models locally with a simple API.
Openfort
Game-focused wallet infrastructure with session keys.
OpenZeppelin
Audited smart contract libraries and security tooling.
Pimlico
ERC-4337 infrastructure for bundlers, paymasters, and smart accounts.
Plaid
Bank account linking and financial data APIs.
Ponder
Local-first indexing framework for Ethereum app development.
Privy
Wallet onboarding and embedded wallet infrastructure for apps.
Push Protocol
Web3 notification network for wallet alerts and channel broadcasts.
Pyth
High-fidelity oracle network for real-time price feeds.
QuickNode
Multichain node provider with Streams for real-time webhooks.
Rain
Card issuing and payment infrastructure for crypto-native apps.
RainbowKit
React wallet connection library with polished UX.
Remix IDE
Browser-based Solidity IDE for rapid prototyping.
Request Network
Crypto invoicing and payment requests onchain.
Scaffold-ETH
Full-stack Ethereum starter kit for rapid dapp prototyping.
Semaphore
Zero-knowledge groups for anonymous signaling and private identity.
Shinami
Sui node infrastructure and gas station for sponsored transactions.
Shyft
Solana APIs for transaction parsing and wallet activity feeds.
Skip Protocol
MEV-aware routing and cross-chain swap infrastructure for Cosmos.
Solana
High-performance L1 for scalable consumer and DeFi applications.
SQD
Decentralized data lake for historical on-chain queries.
Stacks SDK
SDK for Bitcoin-anchored smart contracts on the Stacks layer.
Stripe
Payment processing and financial infrastructure APIs.
Supabase
Open-source Firebase alternative with Postgres and auth.
Telegram
Bot API for alerts, trading signals, and user notifications.
Tellor
Permissionless oracle for custom data feeds and dispute resolution.
Tenderly
Transaction simulation, debugging, and monitoring for EVM chains.
The Graph
Decentralized indexing for querying blockchain data via GraphQL.
Token Terminal
Standardized protocol financials and revenue metrics.
TON SDK
SDK for The Open Network and Telegram-native mini app payments.
Transak
Fiat onramp API for buy-crypto flows and NFT checkout.
Turnkey
Wallet infrastructure with MPC key management for teams.
Uniswap SDK
Official SDK for Uniswap swaps, routing, and liquidity management.
Viem
TypeScript Ethereum client for RPC, contracts, and transactions.
Wagmi
React hooks for Ethereum wallets, contracts, and chain state.
WalletConnect
Open protocol connecting wallets to decentralized applications.
Wormhole
Cross-chain bridge SDK for tokens and NFTs.
XMTP
Wallet-to-wallet messaging protocol for encrypted onchain DMs.
ZeroDev
Account abstraction toolkit with session keys and sponsored gas.