Block explorers let you inspect transactions, smart contracts, tokens, and wallet history on any blockchain. Critical for debugging, auditing, user-facing transaction tracking, and developer tooling.
All tools independently reviewed. Updated 2026. Affiliate links marked *.
The definitive Ethereum block explorer trusted by 10M+ users
Etherscan is the most widely used Ethereum block explorer and data aggregator, serving over 10 million monthly users and processing hundreds of millions of API …
Open-source block explorer self-hostable on any EVM chain
Blockscout is an open-source EVM block explorer that has become the go-to solution for Layer 2 networks, app chains, and testnets that want a full-featured expl…
The leading Solana block explorer — acquired by Etherscan, with deep SPL token and DeFi analytics
Solscan is the most widely used Solana block explorer, having surpassed the official Solana Explorer in daily users due to its richer feature set and more intui…
The official BNB Chain block explorer from the Etherscan team — identical UX, full BSC coverage
BscScan is the primary block explorer for BNB Chain (formerly Binance Smart Chain), built and operated by Etherscan under a licensing agreement with BNB Chain. …
Multi-chain block explorer from OKX covering 30+ chains including Bitcoin, Solana, and all EVM networks
OKLink is the multi-chain block explorer built by OKX, one of the world's largest crypto exchanges, and is unique in offering a single explorer interface that s…
The block explorer for Avalanche subnets, L3 rollups, and chains the major explorers ignore
Routescan is a multi-chain explorer specializing in the long tail of EVM chains — Avalanche subnets, Layer 3 rollups, app-chains, and emerging networks that are…
The Etherscan-built block explorer for Arbitrum One and Nova
Arbiscan is the official Etherscan-family block explorer for Arbitrum, the leading Ethereum layer-2 rollup. Operated by the Etherscan team, it offers the same f…
The official Etherscan-family explorer for Coinbase's Base L2
Basescan is the Etherscan-built block explorer for Base, Coinbase's fast-growing Ethereum layer-2. It provides the full Etherscan toolset scoped to Base: transa…
Etherscan-family explorer for Polygon PoS and zkEVM
Polygonscan is the official Etherscan-built explorer for the Polygon network, covering Polygon PoS and Polygon zkEVM. It delivers the standard Etherscan experie…
The Etherscan-family explorer for the OP Mainnet layer-2
Optimistic Etherscan is the official Etherscan-built block explorer for OP Mainnet, the flagship chain of the Optimism / OP Stack ecosystem. It brings Etherscan…
Etherscan-family explorer for Consensys' Linea zkEVM
Lineascan is the official Etherscan-built explorer for Linea, the zkEVM layer-2 developed by Consensys (the team behind MetaMask and Infura). It offers the comp…
Etherscan-family explorer for the Scroll zkEVM rollup
Scrollscan is the official Etherscan-built block explorer for Scroll, a zkEVM layer-2 focused on bytecode-level EVM equivalence. It provides Etherscan's standar…
The primary block explorer for Avalanche C-Chain
SnowTrace is the primary block explorer for the Avalanche C-Chain, the EVM-compatible chain within the Avalanche network. It provides the familiar explorer feat…
The official block explorer for the TRON network
Tronscan is the official block explorer for TRON, one of the highest-throughput chains in crypto and the dominant network for USDT (Tron-based Tether) transfers…
Developer-friendly Solana explorer with rich transaction decoding
SolanaFM is a Solana block explorer built with developers in mind, known for turning Solana's notoriously complex transactions into human-readable, well-decoded…
The leading multi-chain explorer for the Cosmos ecosystem
Mintscan, built by Cosmostation, is the most widely used block explorer for the Cosmos ecosystem, covering the Cosmos Hub and dozens of interconnected app-chain…
Multi-network explorer for Polkadot, Kusama, and Substrate chains
Subscan is the leading block explorer for the Polkadot ecosystem, covering the Polkadot and Kusama relay chains along with the many parachains and standalone Su…
Feature-rich block explorer for Starknet
Starkscan is a leading block explorer for Starknet, the ZK-rollup layer-2 that uses the Cairo programming language and STARK proofs rather than the EVM. Because…
The original Starknet explorer, built by Nethermind
Voyager, built by Nethermind, is the original and semi-official block explorer for Starknet, the Cairo-based ZK-rollup. It provides transaction and address look…
Block explorer for the Sui network and its object-centric model
Suiscan is a leading block explorer for Sui, the layer-1 built on the Move programming language with a distinctive object-centric data model. Sui doesn't organi…
The official block explorer for the Aptos network
Aptos Explorer is the official block explorer for Aptos, a Move-based layer-1 originally developed from Meta's Diem project. Like Sui, Aptos uses the Move langu…
Open-source Bitcoin explorer and real-time mempool visualizer
Mempool.space is the most popular open-source Bitcoin block explorer and mempool visualizer, and it has become the default tool for understanding Bitcoin fee ma…
Multi-blockchain explorer and search engine across 40+ networks
Blockchair is a multi-blockchain explorer and search engine that indexes 40+ networks — including Bitcoin, Ethereum, and many major chains — under one unified i…
One of the oldest and most-used explorers for Bitcoin and Ethereum
Blockchain.com Explorer is one of the original block explorers, dating back to Bitcoin's early years, and it remains among the most-visited explorers for casual…
Fast, self-hosted open-source explorer that runs on your own Erigon node
Otterscan is a free, open-source, self-hosted block explorer designed to run directly on top of your own Erigon (or compatible) Ethereum node, giving you an Eth…
Security-focused transaction explorer and debugger from BlockSec
Phalcon Explorer, built by the security firm BlockSec, is a transaction explorer purpose-built for security analysis and debugging rather than everyday lookups.…
There is no single best block explorer — the right one depends on the chain. Ethereum and its EVM layer-2s use the Etherscan family (Arbiscan, Basescan, Polygonscan). Solana uses Solscan or SolanaFM. Bitcoin uses mempool.space. Cosmos uses Mintscan; Polkadot uses Subscan; Starknet uses Starkscan or Voyager. Using the native explorer for each chain gives you the deepest, most accurate view of that ecosystem's specific concepts.
The highest-value habit before interacting with any token or contract is checking its verification status on an explorer. A verified contract has public source code that matches the deployed bytecode, holder concentration you can inspect, and no hidden suspicious functions. On scam-heavy chains, verification status alone filters out a large share of obvious scams — and unverified contracts handling real value should be treated with extreme caution.
Most explorers (the Etherscan family) are closed-source and centrally operated. If you are launching a chain or want an explorer you control, Blockscout is the open-source standard for L2s and app-chains. For privacy, Otterscan runs directly on your own node so your lookups never leak to a third party — the principled choice for node operators who do not want to trust a hosted explorer with their query history.
Beyond everyday lookups, specialised explorers do things the mainstream ones cannot. Tenderly offers an opcode-level visual debugger that shows exactly why a transaction reverted. Phalcon, built for security analysis, provides full call traces, state diffs, and fund-flow visualisation — the standard tool in DeFi hack post-mortems. If you are a developer or security researcher, these are worth knowing about.