Etherscan remains the default block explorer for Ethereum, but it is no longer the only option, and for many workflows it is no longer the best one. Since Etherscan rolled out its Multichain hub in 2024, rate-limited its free API, and quietly delisted certain contract pages, developers and analysts have spread out across a wider set of explorers. This guide compares the eight alternatives that matter most in 2026: Blockscout, Routescan, OKLink, BlockSec Phalcon, Otterscan, Sourcify, Tenderly, and Phalcon Explorer.
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Three pressures push teams off Etherscan. First, API rate limits on the free tier cap most reads at 5 calls per second, which breaks any indexer or dashboard that scales. Second, Etherscan has removed contract verification pages for sanctioned or disputed addresses, leaving forensic gaps. Third, the Multichain product unifies branding but charges per chain for advanced features that competitors bundle free.
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Below is a side-by-side view of chain coverage, standout features, free-tier limits, and the audience each explorer serves. Use it as a quick triage before reading the detail sections.

Blockscout is the most widely deployed Etherscan alternative because it is free, self-hostable, and ships with the same explorer surface developers expect. Optimism, Gnosis Chain, Polygon zkEVM, and most OP Stack rollups run a Blockscout instance as their canonical explorer.
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Its contract verification accepts Solidity, Vyper, and stylus-Rust sources, and the token analytics dashboard exposes holders, transfers, and ERC-20 supply without a paid tier. The hosted version at blockscout.com indexes more than 800 EVM networks. Source: docs.blockscout.com, repo at github.com/blockscout/blockscout.
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Routescan started as the canonical explorer for Avalanche subnets and grew into a multichain hub at routescan.io. Its unified search lets you paste a tx hash or address and get hits across every indexed chain at once, which is useful when a wallet bridges across L2s in the same session.
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Routescan also hosts the official explorers for Avalanche C-Chain (snowtrace.io), Dexalot, DFK Chain, and several other subnets, so a single API key works across that ecosystem. Source: routescan.io.
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OKLink, run by OKX, leans into compliance. Every address page surfaces AML labels, sanctions flags, and a risk score sourced from OKLink's own clustering. For exchanges and fintechs that need a quick read on counterparty risk without buying a Chainalysis seat, it fills the gap.
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Coverage extends past EVM. OKLink indexes Bitcoin, Solana, Aptos, Sui, and TON in addition to the major EVM chains, which is unusual for a single explorer brand. Source: oklink.com.
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Phalcon, from BlockSec, is built for transaction forensics. Drop a tx hash into app.blocksec.com/explorer and you get a step-by-step call trace, storage diff, decoded events, and a fork-and-simulate button that lets you replay the transaction with different inputs. It is the tool most onchain security firms reach for when reconstructing an exploit.
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The free tier covers individual researchers; the paid product layers in alerting and continuous monitoring. Source: phalcon.blocksec.com.
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Otterscan is the answer for developers who refuse to send every RPC call to a third party. It is a single-page web app that talks directly to a local Erigon archive node and exposes Etherscan-style pages, including an internal transactions tree and a built-in EVM bytecode decompiler. Nothing leaves your machine.
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Because it ships as a static bundle, Otterscan is also popular inside private testnets and Anvil forks. Source: repo at github.com/otterscan/otterscan.
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Sourcify is narrower in scope than the others. It does one thing well: verify that a deployed contract's bytecode matches a given Solidity source, then pin the source to IPFS so anyone can fetch it without a centralized intermediary. Foundry, Hardhat, and Remix all integrate Sourcify as a verification target.
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For teams that worry about Etherscan delisting a verified contract, Sourcify is the censorship-resistant backstop. Source: sourcify.dev, repo at github.com/ethereum/sourcify.
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Tenderly is less a public explorer and more a developer suite, but its public transaction pages have become a popular Etherscan stand-in for debugging. The simulator lets you fork mainnet, replay a tx with edited state, and watch every internal call resolve in real time.
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Tenderly's web3 gateway and alerting features are the upsell, but the read-only explorer at dashboard.tenderly.co is free and indexes 40+ EVM chains. Source: docs.tenderly.co.
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Not to be confused with BlockSec's Phalcon product, Phalcon Explorer surfaces MEV context on every transaction page: which bundle the tx landed in, which searcher submitted it, and what arbitrage or liquidation profit resulted. It is the easiest way to read a sandwich attack without writing Dune queries.
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Coverage is limited to chains with mature MEV infrastructure: Ethereum, BNB Chain, Polygon, Base, and Arbitrum. Source: explorer.phalcon.xyz.
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Match the tool to the job. For a new L2 launch, run Blockscout. For Avalanche subnets or unified multichain UX, use Routescan. For compliance lookups, OKLink. For audits and exploit forensics, BlockSec Phalcon. For local-first privacy, Otterscan. For censorship-resistant source verification, Sourcify. For production debugging and simulation, Tenderly. For MEV context, Phalcon Explorer.
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Most serious teams end up using three or four of these together, not one. Etherscan still has the deepest historical coverage and the most labeled addresses on Ethereum mainnet, so it remains worth keeping in the toolkit even when the daily driver lives elsewhere.
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Etherscan Multichain, launched in 2024, unifies search across the Etherscan-branded explorers (etherscan.io, bscscan.com, polygonscan.com, arbiscan.io, optimistic.etherscan.io, basescan.org, and a handful more). It keeps the familiar UI but each chain still requires its own API key, and rate limits stack rather than merge. For pure Ethereum L1 plus a few major L2s it is still the most polished option. For long-tail rollups, app-chains, or anything outside the ConsenSys-curated list, the alternatives above index more chains and ship more features per dollar.
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Feature lists were pulled from each explorer's official documentation between May 10 and May 19, 2026, then spot-checked against the public web UI. Chain counts reflect what each provider self-reports on its homepage or docs index; "free tier" reflects the documented limit on the public API or hosted UI as of the same window.
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Primary sources: Blockscout docs, Blockscout repo, Routescan, OKLink, BlockSec Phalcon, Otterscan repo, Sourcify, Sourcify repo, Tenderly docs, Phalcon Explorer, Etherscan Multichain announcement.
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