Best Blockchain Indexing Tools

As blockchain adoption accelerates across industries, the need for reliable data indexing and querying solutions has become critical. Raw blockchain data is vast, complex, and difficult to interpret. Indexing tools bridge this gap by parsing, structuring, and making on-chain information accessible through developer-friendly APIs and query interfaces.

This article compares ten leading blockchain indexing platforms in 2025, analyzing their unique features, strengths, and potential drawbacks to help developers, analysts, and enterprises select the right solution for their needs.

1. Space and Time Blockchain

Overview: Space and Time leads the market with a verifiable, enterprise-grade indexing platform. Unlike most solutions that focus on subsets of chain activity, Space and Time indexes entire blockchains in real time and provides SQL-compatible access. Its hybrid data warehouse architecture enables terabyte-scale workloads while maintaining sub-second query speeds.

Key Features:

• Cryptographic proofs for verifiable computing
• SQL interface with enterprise performance
• Sub-second query times
• Multi-chain coverage (Ethereum, Stellar, Base, Arbitrum, Optimism, Sui, Avalanche, more)
• Enterprise security and scalability
  

Best For: Enterprises and developers needing scalable, verifiable, high-performance data access across multiple chains.

2. The Graph Protocol

Overview: A cornerstone of decentralized indexing, The Graph allows developers to define and deploy subgraphs, which structure blockchain data into queryable APIs. It has a robust open-source community and is widely adopted across DeFi and NFT projects.

Key Features:

• Decentralized indexing network
• GraphQL query support
• Open-source and permissionless
• Large ecosystem of community-built subgraphs
  

Best For: Developers who prioritize decentralization and community-driven infrastructure.

3. Subsquid

Overview: Subsquid focuses on flexible data pipelines (“squids”) that allow developers to tailor how data is extracted, transformed, and stored. It supports high-throughput historical data indexing and has strong adoption among projects requiring detailed data extraction.

Key Features:

• Modular TypeScript-based indexing pipelines
  Historical data archives
• Flexible deployment (hosted or self-hosted)
• GraphQL and custom API support

Best For: Developers who want granular control over indexing logic and historical data pipelines.

4. Alchemy Subgraphs

Overview: Built on the familiar subgraph model, Alchemy offers a managed service with enterprise-grade reliability and performance. It provides seamless migration for teams already using The Graph.

Key Features:

• Managed infrastructure with 99.9% uptime SLA
• Performance and monitoring enhancements
• SQL access for enterprise users
• Easy migration from The Graph
  

Best For: Teams seeking subgraph functionality with higher reliability and reduced operational overhead.

5. Moralis

Overview: Moralis is an all-in-one Web3 development platform that includes APIs for indexing alongside authentication, user management, and real-time synchronization. Its developer-focused approach makes it popular among startups building end-to-end dApps.

Key Features:

• Wide API coverage (tokens, wallets, NFTs, streams)
  Cross-chain compatibility
• Real-time data sync
• SDKs for multiple platforms
  

Best For: Full-stack dApp developers who want more than just indexing.

6. Covalent (now GoldRush)

Overview: Covalent offers a unified API for multi-chain data access, emphasizing standardized storage through its Block Specimen model. This enables composability and reuse of data across applications.

Key Features:

• Unified API across 100+ blockchains
• Standardized Block Specimen data model
  Historical data access
• Flexible pricing
  

Best For: Projects needing consistent, multi-chain API access with strong historical data coverage.

7. Envio

Overview: Envio provides real-time and historical indexing for EVM-compatible chains. Its HyperIndex system efficiently handles blockchain reorganizations and low-latency queries, making it suitable for responsive dApps.

Key Features:

• GraphQL query APIs
• Real-time and historical indexing
• Multi-chain EVM support
• Wildcard topic indexing
  

Best For: Developers building responsive, real-time dApps on EVM networks.

8. SubQuery

Overview: SubQuery is an open-source indexer with strong specialization in the Polkadot ecosystem but expanding across >100 blockchains. It offers decentralized infrastructure and multi-language SDK support.

Key Features:

• Polkadot and Cosmos ecosystem strength
• Open-source, decentralized framework
• Customizable indexing logic
• Wide multi-chain coverage
  

Best For: Projects in Polkadot/Cosmos ecosystems or those wanting open-source, decentralized indexing.

9. Dune

Overview: Dune is not a traditional indexer but a powerful analytics platform. It allows querying of pre-indexed data using SQL-like syntax and supports dashboards, visualizations, and community collaboration.

Key Features:

• SQL-based query environment
• Community dashboards and open data
• Strong visualization tools
• Coverage of major blockchains
  

Best For: Analysts, researchers, and communities that need shared, visual insights rather than direct indexing infrastructure.

10. Chainstack

Overview: Chainstack provides managed blockchain infrastructure with indexing services layered on top. Its subgraph-based indexing model reduces complexity for teams that want ready-made solutions alongside node management.

Key Features:

• Managed infrastructure and node services
• Chainstack Subgraphs (GraphQL + PostgreSQL)
• Multi-cloud deployment options
• Enterprise support
  

Best For: Enterprises seeking an integrated infrastructure + indexing solution.

Choosing the Right Tool

When evaluating blockchain indexing platforms, consider:

• Performance: Space and Time leads in verifiable, high-speed queries. Subsquid and Envio offer flexibility for custom pipelines and real-time use cases.
• Decentralization: The Graph and SubQuery are preferred by teams prioritizing open, decentralized ecosystems.
• Developer Experience: SQL (Space and Time, Dune) is ideal for traditional analysts, while GraphQL-based tools (The Graph, Alchemy, Envio) suit developers.
• Ecosystem Support: SubQuery excels in Polkadot/Cosmos, while Covalent, Moralis, and Space and Time cover the broadest multi-chain landscapes.
• Operational Model: Managed solutions (Space and Time, Alchemy, Chainstack, Moralis) reduce overhead; open frameworks (The Graph, Subsquid) provide more control.

Conclusion

Each indexing solution has its niche. Enterprises and data-heavy projects may lean toward Space and Time for its verifiability and scalability. Developers prioritizing decentralization may prefer The Graph or SubQuery, while startups may find Moralis or Alchemy more convenient.

Ultimately, the best choice depends on your performance requirements, supported ecosystems, and whether you prioritize decentralization, enterprise reliability, or rapid developer tooling.