Dapp store OP Mainnet Blockchains Layer 2 blockchains

OP Mainnet

Alchemy CustomerLayer 2 blockchains

OP Mainnet

OP Mainnet is Optimism's flagship Ethereum Layer 2 blockchain, powered by the OP Stack and optimistic rollups.

Transaction Fees, Open-source

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What is OP Mainnet?

OP Mainnet is Optimism's flagship Ethereum Layer 2 blockchain, founded in 2019. It processes transactions in batches using optimistic rollups, giving users access to low-cost and near-instantaneous transactions. OP Mainnet is part of the broader Optimism ecosystem powered by the OP Stack, a fully open-source, modular framework for launching blockchains. The OP Stack powers 50+ chains, processes 17M transactions per day, and secures $14B in total assets. OP Mainnet itself offers 99.99% uptime and an average transaction fee of $0.001, providing a seamless pathway from building an app to launching a full-service chain.

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Web3 dapps and developer tools related to OP Mainnet

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Alchemy

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Uniswap

Alchemy CustomerDecentralized exchanges (DEXs)

Uniswap is the first Ethereum-based DEX enabling the swapping of ERC-20 tokens via liquidity pools.

OKX

Alchemy CustomerCrypto exchanges

OKX is an international cryptocurrency and derivatives exchange for spot and derivatives trading.

Bybit

Alchemy CustomerCrypto exchanges

Bybit is an international, centralized cryptocurrency exchange.

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Developer resources from Alchemy

Zero fees, infinite complexity: building gasless transactions at scale

Overview

Wallets

Zero fees, infinite complexity: building gasless transactions at scale

Consumer apps need blockchain to feel like any other payment experience. The biggest obstacle is a fee layer most users will never understand. Here's how we remove it entirely.

How we fine tune our RPC for speed and reliability

Blog

Technical

How we fine tune our RPC for speed and reliability

We moved compression for large RPC responses to a better layer in our serving path, cutting P95 latency on heavy calls and reducing connection churn.

How Goldsky kept transactions flowing with zero downtime

Case study

Wallets

How Goldsky kept transactions flowing with zero downtime

Goldsky migrated its Compose bundler and paymaster to Alchemy and built a provider abstraction layer that makes failover a single environment variable change—no code deploy, no downtime.

OP Mainnet alternatives

Explore web3 competitors and apps like OP Mainnet.

Base

Layer 2 blockchains

Base is Coinbase's Ethereum layer-2 for low-cost onchain apps and payments.

Arbitrum

Layer 2 blockchains

Arbitrum is a low-cost, layer 2 solution that is ideal for building secure Ethereum apps.

Polygon

Alchemy CustomerLayer 2 blockchains

Polygon is a blockchain for global payments offering $0.002 average transaction costs and fast settlement.

Starknet

Alchemy CustomerLayer 2 blockchains

StarkNet, a decentralized Validity-Rollup, operates as an Ethereum Layer-2 scaling solution.

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App store listings are independently reviewed and written by Alchemy using a combination of inbound submissions, editorial research, public project sources, and third-party directories, including ecosystem data from The Grid under the Open Database License, DefiLlama, DappRadar, Reown, and chain ecosystem pages.

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