Repositories list

• optimism

  Public
  Optimism is Ethereum, scaled.

  ethereumrollupoptimism+ 2

  ethereumrollupoptimismovml2-scaling

  Go

  •

  MIT License

  •4k4k forks•6.5k6.5k stars•705705 issues•117117 pull requests•Updated Aug 21, 2026Aug 21, 2026

• op-analytics

  Public
  Onchain Data, Utilities, References, and other Analytics on Optimism

  Jupyter Notebook

  •9191 forks•154154 stars•6363 issues•2020 pull requests•Updated Aug 21, 2026Aug 21, 2026

• op-txverify

  Public
  Utilities for verifying Safe transactions

  Go

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  MIT License

  •22 forks•77 stars•66 issues•33 pull requests•Updated Aug 20, 2026Aug 20, 2026

• superchain-ops

  Public
  superchain-ops allows builders to create and execute tasks on EVM chains.

  devopsethereummultsig+ 1

  devopsethereummultsigoptimism-l2

  Solidity

  •

  MIT License

  •127127 forks•9898 stars•1919 issues•99 pull requests•Updated Aug 20, 2026Aug 20, 2026

• superchain-registry

  Public
  An index of chains which serves as the source of truth for who’s in the Superchain Ecosystem

  Go

  •

  MIT License

  •219219 forks•222222 stars•4141 issues•1515 pull requests•Updated Aug 20, 2026Aug 20, 2026

• factory

  Public
  Github CI workflows to build artifacts securely

  Python

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  MIT License

  •55 forks•11 star•11 issue•22 pull requests•Updated Aug 20, 2026Aug 20, 2026

• infra

  Public
  Optimism is Ethereum, scaled.

  ethereumrollupinfra+ 2

  ethereumrollupinfraoptimisml2-scaling

  Go

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  MIT License

  •125125 forks•4545 stars•4646 issues•5555 pull requests•Updated Aug 20, 2026Aug 20, 2026

• reth

  Public
  Modular, contributor-friendly and blazing-fast implementation of the Ethereum protocol, in Rust

  Rust

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  Apache License 2.0

  •2.5k2.5k forks•00 stars•00 issues•00 pull requests•Updated Aug 19, 2026Aug 19, 2026

• design-docs

  Public
  MIT License

  •5151 forks•6060 stars•66 issues•3535 pull requests•Updated Aug 19, 2026Aug 19, 2026

• op-geth

  Public
  Go

  •

  GNU Lesser General Public License v3.0

  •981981 forks•399399 stars•6060 issues•3939 pull requests•Updated Aug 19, 2026Aug 19, 2026

• act

  Public
  Run your GitHub Actions locally 🚀

  Go

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  MIT License

  •2k2k forks•00 stars•00 issues•33 pull requests•Updated Aug 19, 2026Aug 19, 2026

• monitorism

  Public
  Suite of tools for Monitoring OP Stack Chains 🔴 Offers real-time detection and Incident response capabilities ✨

  securitymonitoringoptimism+ 1

  securitymonitoringoptimismonchain

  Go

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  MIT License

  •3434 forks•3838 stars•44 issues•44 pull requests•Updated Aug 19, 2026Aug 19, 2026

• chain-test-data

  Public
  Pre-images for testing compatibility with existing chains.

  Shell

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  MIT License

  •77 forks•55 stars•00 issues•11 pull request•Updated Aug 18, 2026Aug 18, 2026

• actions

  Public
  DeFi Actions SDK for the OP Stack

  TypeScript

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  MIT License

  •2222 forks•3232 stars•8888 issues•2929 pull requests•Updated Aug 15, 2026Aug 15, 2026

• pm

  Public
  Modeled after https://github.com/ethereum/eth2.0-pm

  JavaScript

  •88 forks•1818 stars•55 issues•44 pull requests•Updated Aug 14, 2026Aug 14, 2026

• specs

  Public
  OP Stack Specifications

  Python

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  Creative Commons Zero v1.0 Universal

  •204204 forks•177177 stars•7676 issues•2222 pull requests•Updated Aug 13, 2026Aug 13, 2026

• ethereum-optimism.github.io

  Public
  Unified token list for OP Mainnet, Base, and other OP Chains

  TypeScript

  •862862 forks•338338 stars•99 issues•6161 pull requests•Updated Aug 11, 2026Aug 11, 2026

• devnets

  Public
  Just

  •55 forks•1010 stars•44 issues•11 pull request•Updated Aug 10, 2026Aug 10, 2026

• circleci-utils

  Public
  Utility to use in with circleci

  Python

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  MIT License

  •66 forks•55 stars•11 issue•55 pull requests•Updated Aug 4, 2026Aug 4, 2026

• OPerating-manual

  Public
  OPerating Manual of the Optimism Collective. https://optimism.io/vision

  113113 forks•198198 stars•00 issues•00 pull requests•Updated Jul 16, 2026Jul 16, 2026

• superchain-starter

  Public template
  A lightweight, focused starting point for prototyping/building on the Superchain

  TypeScript

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  MIT License

  •6767 forks•104104 stars•55 issues•22 pull requests•Updated Jun 29, 2026Jun 29, 2026

• superchain-starter-xchain-eth-multitransfer

  Public template
  Superchain interop example: Crosschain Multisend

  TypeScript

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  MIT License

  •6767 forks•55 stars•00 issues•11 pull request•Updated Jun 29, 2026Jun 29, 2026

• superchain-starter-xchain-flash-loan-example

  Public template
  Superchain interop example: Crosschain flash loan

  TypeScript

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  MIT License

  •6767 forks•1818 stars•00 issues•33 pull requests•Updated Jun 29, 2026Jun 29, 2026

• superchain-starter-superchainerc20

  Public template
  Superchain interop example: SuperchainERC20 that mints initial supply on a single chain

  TypeScript

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  MIT License

  •6767 forks•1919 stars•00 issues•22 pull requests•Updated Jun 29, 2026Jun 29, 2026

• blob-archiver

  Public archive
  Go

  •

  MIT License

  •8585 forks•33 stars•00 issues•00 pull requests•Updated Jun 24, 2026Jun 24, 2026

• ecosystem

  Public
  Optimism is Ethereum, scaled.

  TypeScript

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  MIT License

  •8181 forks•139139 stars•5959 issues•1717 pull requests•Updated Jun 2, 2026Jun 2, 2026

• presigner

  Public
  Multisig transaction presigner made easy

  Go

  •1010 forks•55 stars•44 issues•11 pull request•Updated May 20, 2026May 20, 2026

• rollup-boost

  Public
  Sidecar to Enable Rollup Extensions

  Rust

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  MIT License

  •9494 forks•00 stars•00 issues•88 pull requests•Updated May 12, 2026May 12, 2026

• supersim

  Public
  Local Multi-L2 Development Environment

  Go

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  MIT License

  •119119 forks•264264 stars•3333 issues•1515 pull requests•Updated Apr 24, 2026Apr 24, 2026

• superchain-relayer

  Public
  Interface to relay messages from L2 to L1 for chains in the Superchain like Base, Zora, and OP Mainnet

  TypeScript

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  MIT License

  •2525 forks•3434 stars•66 issues•33 pull requests•Updated Apr 24, 2026Apr 24, 2026