Welcoming Repositories Index Solidity Ecosystem
Top Welcoming Open-Source Solidity Repositories
Top welcoming Solidity repositories. Scored by real 90-day external PR merge rates, maintainer review turnaround speed, and first-time contributor success.
Updated daily • Sun, 30 Aug 2026 UTC
Tracked Repos
202
>100 stars verified
Avg Merge Rate
27%
90-day external PRs
Open GFIs
1
Beginner friendly issues
Welcoming Tier
12
S & A Tier maintainers
Ranked Solidity Repositories
Showing top 50 of 202 ranked repositories
| Rank | Repository | Tier | Score | Merge Rate | Good First Issues |
|---|---|---|---|---|---|
| #1 | Smart contracts for the staking modules of the Lido protocol | S•Elite | 78.2 | 100.0% | - |
| #2 | Celestia -> EVM bridge | B•Solid | 74.9 | 100.0% | - |
| #3 | Vote. Rally. Earn. | S•Elite | 71.0 | 85.7% | - |
| #4 | Reproduce DeFi hacked incidents using Foundry. | S•Elite | 70.9 | 100.0% | - |
| #5 | A•Welcoming | 65.0 | 66.7% | - | |
| #6 | OUSD and OETH are stablecoins that passively accrue yield while you are holding it | A•Welcoming | 64.5 | 73.5% | - |
| #7 | 0x settlement contracts using Permit2 | A•Welcoming | 64.4 | 78.9% | - |
| #8 | LLVM-based Solidity compiler. | A•Welcoming | 62.0 | 76.5% | - |
| #9 | Morpho Blue Oracles | A•Welcoming | 61.7 | 87.5% | - |
| #10 | LI.FI Smart Contracts | A•Welcoming | 60.8 | 75.8% | - |
| #11 | A smart contract library that emphasizes readability and onchain composability using EIP-2535 / EIP-8153 Diamonds. | B•Solid | 58.8 | 100.0% | 1 |
| #12 | Spells for Spark Protocol | A•Welcoming | 57.9 | 100.0% | - |
| #13 | The Ethereum Request for Comment repository | A•Welcoming | 56.8 | 33.3% | - |
| #14 | OpenZeppelin Contracts is a library for secure smart contract development. | A•Welcoming | 56.4 | 44.2% | - |
| #15 | Smart Contract Submodule For zkSync Era | B•Solid | 54.5 | 45.0% | - |
| #16 | foundry-rs/forge-std1,054 A collection of helpful contracts and libraries for use with Forge and Foundry | B•Solid | 50.4 | 100.0% | - |
| #17 | Vectorized/solady3,360 Optimized Solidity snippets. | B•Solid | 43.9 | 50.0% | - |
| #18 | Public repo for the community devs to advance the Beefy protocol. | C•Moderate | 39.3 | 33.3% | - |
| #19 | The contracts that power the Delegation Framework | D•Risky | 8.0 | 0.0% | - |
| #20 | A static analysis tool for rust, anchor, stylus, and solidity smart contracts. | D•Risky | 8.0 | 0.0% | - |
| #21 | This repository implements a simplified PoC that demonstrates how signature malleability attacks using compact signatures can be executed. | D•Risky | 8.0 | 0.0% | - |
| #22 | An arbitrage bot is a smart contract connected to an external automation script that controls its operation. | D•Risky | 0.0 | 0.0% | - |
| #23 | BNB Evolution Proposals | D•Risky | 0.0 | 0.0% | - |
| #24 | A book on all things Foundry, available at https://getfoundry.sh. | D•Risky | 0.0 | 0.0% | - |
| #25 | Template to develop ethereum smart contracts | D•Risky | 0.0 | 0.0% | - |
| #26 | D•Risky | 0.0 | 0.0% | - | |
| #27 | A library of modern, hyper-optimized, and extensible Huff contracts with extensive testing and documentation built by Huff maintainers. | D•Risky | 0.0 | 0.0% | - |
| #28 | D•Risky | 0.0 | 0.0% | - | |
| #29 | An experimental decentralized art factory by Justin Roiland and Paradigm. | D•Risky | 0.0 | 0.0% | - |
| #30 | Implementation of the Farcaster contracts | D•Risky | 0.0 | 0.0% | - |
| #31 | These exercises were created for our Advanced Solidity Bootcamp and open sourced. Learn EVM bytecode with the Huff Language. | D•Risky | 0.0 | 0.0% | - |
| #32 | Solarity Solidity Library | D•Risky | 0.0 | 0.0% | - |
| #33 | First place for early developers to learn Solidity | D•Risky | 0.0 | 0.0% | - |
| #34 | Robust, Feature-Rich Solidity Template Repository for Foundry Projects with Scripting, Testing, and Utility Bash Scripts. | D•Risky | 0.0 | 0.0% | - |
| #35 | Uniswap V3 clone built to learn smart-contracts development in Solidity | D•Risky | 0.0 | 0.0% | - |
| #36 | All the contracts related to the Defi Saver ecosystem | D•Risky | 0.0 | 0.0% | - |
| #37 | Pre-built security properties for common Ethereum operations | D•Risky | 0.0 | 0.0% | - |
| #38 | An incentivized keeper network for anonymous keeper and job registration | D•Risky | 0.0 | 0.0% | - |
| #39 | PancakeSwap Smart Contracts | D•Risky | 0.0 | 0.0% | - |
| #40 | D•Risky | 0.0 | 0.0% | - | |
| #41 | 🐂 BULL RUSH — a 3D neon endless runner for The Black Bull ($ANSEM). React Three Fiber game + Hono/Redis API + dynamic X share cards. Play → trybullrush.xyz | D•Risky | 0.0 | 0.0% | - |
| #42 | Monorepo for Sablier's EVM smart contracts including Lockup, Flow, Airdrops, Bob and Utils protocols | D•Risky | 0.0 | 0.0% | - |
| #43 | Power Dapp template powerdapp.thepower.io | D•Risky | 0.0 | 0.0% | - |
| #44 | D•Risky | 0.0 | 0.0% | - | |
| #45 | Smart Contracts for Shentu Security Oracle | D•Risky | 0.0 | 0.0% | - |
| #46 | A zkRollup DEX & Payment Protocol | D•Risky | 0.0 | 0.0% | - |
| #47 | HTTP Library for Solidity based on curl | D•Risky | 0.0 | 0.0% | - |
| #48 | a16z/cicada326 A protocol for private on-chain voting, implemented in Solidity. | D•Risky | 0.0 | 0.0% | - |
| #49 | D•Risky | 0.0 | 0.0% | - | |
| #50 | ora-io/opml317 OPML: OPtimistic Machine Learning on Blockchain | D•Risky | 0.0 | 0.0% | - |
How to Get Your Solidity PR Merged
1
Check C-Rank™ First: Pick projects with S or A tiers to avoid maintainer ghosts and slow review cycles.
2
Run Local Verification: Ensure test suites and formatting linters pass before opening a pull request.
3
Submit in Maintainer Windows: Check the repository report card to submit when maintainers are most active.
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Frequently Asked Questions: Solidity Open Source
What is the most welcoming Solidity open-source repository?
The highest-ranked Solidity repository on GetMerged is currently lidofinance/staking-modules, with a C-Rank score of 78.2/100 and a 100.0% PR merge rate.
How can I find good first issues in Solidity?
You can browse verified beginner-friendly issues in Solidity by visiting our curated Good First Issues directory at getmerged.abhishekco.de/good-first-issue/solidity.
What makes a Solidity repository ‘Super Welcoming’ on GetMerged?
A ‘Super Welcoming’ (S-Tier) Solidity repository demonstrates an external PR merge rate above 80%, a median first response time within 24 to 48 hours, active review feedback, and clear onboarding documentation.