Repositories list

• actions

  Public
  DeFi Actions SDK for the OP Stack

  TypeScript

  •

  MIT License

  •2020 forks•3030 stars•9191 issues•2222 pull requests•Updated Jun 16, 2026Jun 16, 2026

• op-analytics

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

  Jupyter Notebook

  •8787 forks•155155 stars•6363 issues•2020 pull requests•Updated Jun 16, 2026Jun 16, 2026

• optimism

  Public
  Optimism is Ethereum, scaled.

  ethereumrollupoptimism+ 2

  ethereumrollupoptimismovml2-scaling

  Go

  •

  MIT License

  •4k4k forks•6.4k6.4k stars•710710 issues•123123 pull requests•Updated Jun 16, 2026Jun 16, 2026

• devnets

  Public
  Just

  •55 forks•1010 stars•44 issues•00 pull requests•Updated Jun 15, 2026Jun 15, 2026

• infra

  Public
  Optimism is Ethereum, scaled.

  ethereumrollupinfra+ 2

  ethereumrollupinfraoptimisml2-scaling

  Go

  •

  MIT License

  •123123 forks•4343 stars•4343 issues•5353 pull requests•Updated Jun 15, 2026Jun 15, 2026

• op-geth

  Public
  Go

  •

  GNU Lesser General Public License v3.0

  •988988 forks•399399 stars•6363 issues•4242 pull requests•Updated Jun 15, 2026Jun 15, 2026

• superchain-ops

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

  devopsethereummultsig+ 1

  devopsethereummultsigoptimism-l2

  Solidity

  •

  MIT License

  •128128 forks•9898 stars•1717 issues•99 pull requests•Updated Jun 15, 2026Jun 15, 2026

• monitorism

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

  securitymonitoringoptimism+ 1

  securitymonitoringoptimismonchain

  Go

  •

  MIT License

  •3434 forks•3838 stars•11 issue•22 pull requests•Updated Jun 15, 2026Jun 15, 2026

• specs

  Public
  OP Stack Specifications

  Python

  •

  Creative Commons Zero v1.0 Universal

  •203203 forks•172172 stars•7575 issues•2121 pull requests•Updated Jun 12, 2026Jun 12, 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

  •213213 forks•217217 stars•4141 issues•2121 pull requests•Updated Jun 11, 2026Jun 11, 2026

• op-txverify

  Public
  Utilities for verifying Safe transactions

  Go

  •

  MIT License

  •22 forks•55 stars•55 issues•33 pull requests•Updated Jun 11, 2026Jun 11, 2026

• design-docs

  Public
  MIT License

  •5151 forks•5959 stars•77 issues•3737 pull requests•Updated Jun 10, 2026Jun 10, 2026

• OPerating-manual

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

  112112 forks•194194 stars•00 issues•11 pull request•Updated Jun 9, 2026Jun 9, 2026

• circleci-utils

  Public
  Utility to use in with circleci

  Python

  •

  MIT License

  •66 forks•55 stars•11 issue•44 pull requests•Updated Jun 9, 2026Jun 9, 2026

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

  Public template
  Superchain interop example: Crosschain flash loan

  TypeScript

  •

  MIT License

  •6464 forks•1818 stars•00 issues•33 pull requests•Updated Jun 8, 2026Jun 8, 2026

• ethereum-optimism.github.io

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

  TypeScript

  •856856 forks•337337 stars•99 issues•4747 pull requests•Updated Jun 2, 2026Jun 2, 2026

• ecosystem

  Public
  Optimism is Ethereum, scaled.

  TypeScript

  •

  MIT License

  •8383 forks•140140 stars•4949 issues•1717 pull requests•Updated Jun 2, 2026Jun 2, 2026

• blob-archiver

  Public
  Go

  •

  MIT License

  •8383 forks•33 stars•00 issues•00 pull requests•Updated May 27, 2026May 27, 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

  •

  MIT License

  •9191 forks•00 stars•00 issues•88 pull requests•Updated May 12, 2026May 12, 2026

• factory

  Public
  Github CI workflows to build artifacts securely

  MIT License

  •11 fork•11 star•11 issue•00 pull requests•Updated May 6, 2026May 6, 2026

• superchain-starter

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

  TypeScript

  •

  MIT License

  •6464 forks•104104 stars•55 issues•22 pull requests•Updated Apr 24, 2026Apr 24, 2026

• supersim

  Public
  Local Multi-L2 Development Environment

  Go

  •

  MIT License

  •116116 forks•265265 stars•3333 issues•1414 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

  •

  MIT License

  •2727 forks•3535 stars•66 issues•33 pull requests•Updated Apr 24, 2026Apr 24, 2026

• superchainerc20-starter

  Public
  A starter kit for deploying and testing SuperchainERC20 tokens

  TypeScript

  •

  MIT License

  •171171 forks•309309 stars•66 issues•88 pull requests•Updated Apr 24, 2026Apr 24, 2026

• super-cli

  Public
  ⚡️ sup: Superchain CLI

  TypeScript

  •1010 forks•2020 stars•88 issues•22 pull requests•Updated Apr 24, 2026Apr 24, 2026

• superchain-starter-superchainerc20

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

  TypeScript

  •

  MIT License

  •6464 forks•1919 stars•00 issues•22 pull requests•Updated Apr 24, 2026Apr 24, 2026

• optimism-legacy

  Public
  Legacy Optimism Monorepo

  Go

  •

  MIT License

  •4k4k forks•1414 stars•00 issues•3030 pull requests•Updated Apr 24, 2026Apr 24, 2026

• synpress

  Public
  Synpress is an wrapper around Cypress.io with metamask support thanks to puppeteer.

  JavaScript

  •

  MIT License

  •220220 forks•22 stars•00 issues•99 pull requests•Updated Apr 24, 2026Apr 24, 2026

• chain-test-data

  Public
  Pre-images for testing compatibility with existing chains.

  Shell

  •

  MIT License

  •77 forks•55 stars•00 issues•11 pull request•Updated Apr 21, 2026Apr 21, 2026