ethereum-optimism/optimism

Health v2 · maintenance only

Adoption not part of the score

6465 stars · 4017 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Optimism is the open-source OP Stack, a modular software stack for deploying Ethereum Layer 2 optimistic rollup blockchains such as OP Mainnet and Base. It includes core components for running chains, nodes, and sequencers, letting developers build apps on OP Mainnet or launch their own scalable Ethereum-compatible chains.

Use cases

• deploy smart contracts on an Ethereum layer 2 with low fees
• launch my own Ethereum rollup chain
• run an OP Mainnet node
• bridge ETH or tokens between Ethereum L1 and L2
• understand how optimistic rollups and fault proofs work
• build a blockchain for my fintech or exchange
• set up an L2 rollup testnet end to end

When to choose

• you need scalable, low-cost Ethereum-compatible transactions
• you want to launch a custom L2 chain on shared, standardized infrastructure
• you want to run or operate nodes for OP Stack chains
• you value MIT-licensed, aggressively open-source blockchain software

When to avoid

• you need a standalone L1 blockchain rather than an Ethereum rollup
• you want ZK-rollup technology instead of optimistic rollups
• you need a non-EVM smart contract platform
• you are unwilling to follow OP Stack upgrade governance processes

Facets

framework · maturity active

blockchain sdk developer-tools infrastructure-as-code deployment blockchain developer-tools infrastructure-as-code fintech go cross-platform self-hosted ethereum layer-2 optimistic-rollup op-stack l2-scaling superchain evm smart-contracts node-operator sequencer cryptocurrency docker linux macos

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markdown · JSON · MCP: product_card(name="ethereum-optimism/optimism")