Data & oracles: Web3 developer tools

Best for Index chain data into GraphQL with subgraphs

Chains

Ethereum Solana Base BNB Chain Avalanche Arbitrum Polygon

Price

Free first 100K queries/mo; then $2 per 100,000 queries

License

MIT / Apache-2.0 (graph-node)

Decentralized indexing: build subgraphs or Substreams and query chain data over GraphQL. The first 100,000 queries a month are free, then $2 per 100,000. Covers the major EVM chains and Solana (through Substreams), none of the payments chains.

Best for Hosted subgraphs and streaming data pipelines

Chains

Ethereum Solana Base BNB Chain Avalanche Arbitrum Polygon Stellar Hedera

Price

Free Starter ($100 one-time credits); Scale pay-as-you-go (subgraphs $0.05/hr); Enterprise custom

License

Proprietary

Managed subgraph hosting and Turbo streaming pipelines. Notable for naming Hedera (subgraphs) and Stellar (Turbo) as well as the major chains. Starts with one-time free credits, then pay as you go.

Best for Wallet, token, NFT and DeFi data APIs

Chains

Ethereum Solana Base BNB Chain Avalanche Arbitrum Polygon

Price

Data Feeds Starter $10/mo; Starter $149/mo; Pro $249/mo; Business $749/mo (billed annually); Enterprise custom

License

Proprietary

Wallet, token, NFT and DeFi data APIs plus Streams webhooks and RPC nodes across the major EVM chains and Solana. Paid plans only on its pricing page when we checked.

Best for GraphQL APIs and streams for on-chain and DEX data

Chains

Ethereum Solana Base BNB Chain Avalanche Arbitrum Polygon XRP Ledger Stellar Algorand

Price

Personal $29/mo, Pro $69/mo, Scale $199/mo (billed annually); its pricing page shows conflicting figures

License

Proprietary

GraphQL APIs and streams for real-time and historical on-chain and DEX data across 40+ chains, including the XRP Ledger, Stellar and Algorand as full-history data packs. Paid plans; its pricing page showed conflicting figures, so confirm there.

Best for SQL analytics and data API over decoded chain data

Chains

Ethereum Solana Base BNB Chain Avalanche Arbitrum Polygon XRP Ledger Stellar

Price

Free view-only tier; paid Analyst, Plus and Enterprise plans on its pricing page

License

Proprietary

SQL analytics over decoded multi-chain data with dashboards and a query API. Its data catalog includes the XRP Ledger and Stellar alongside the major chains. Free view-only tier; check the pricing page for paid plans.

Best for Account, NFT and token data API for XRPL and Xahau

Chains

XRP Ledger Xahau

Price

Free (non-commercial, 2K req/day); paid from EUR 30/mo to EUR 2,000/mo; on-demand per-request; free on test networks

License

Proprietary

REST API for XRP Ledger and Xahau account, NFT, token and transaction data, the backend behind the Bithomp and Xahau explorers. Free for non-commercial use with daily limits; paid plans from 30 euros a month. Its docs list both XRPL and Xahau mainnet endpoints.

Best for Historical REST and gRPC API for Hedera

Chains

Hedera

Price

Free public endpoints (mainnet throttled 50 rps/IP); self-host free

License

Apache-2.0

Hedera's historical and indexed REST and gRPC API for transactions, accounts, tokens and contract logs. Free public endpoints are rate-limited and described by Hedera as not for production; self-host or use a commercial provider for that.