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 • Tue, 13 Oct 2026 UTC
Tracked Repos
280
>100 stars verified
Avg Merge Rate
68%
90-day external PRs
Open GFIs
1
Beginner friendly issues
Welcoming Tier
19
S & A Tier maintainers
Ranked Solidity Repositories
Showing top 50 of 280 ranked repositories
| Rank | Repository | Tier | Score | Merge Rate | Good First Issues |
|---|---|---|---|---|---|
| #1 | Max Yield Vaults: ETH, BTC, USD, BNB | A•Welcoming | 66.4 | 95.2% | - |
| #2 | Smart contracts for the staking modules of the Lido protocol | A•Welcoming | 66.3 | 77.3% | - |
| #3 | A book on all things Foundry, available at https://getfoundry.sh. | A•Welcoming | 65.4 | 75.0% | - |
| #4 | Celestia -> EVM bridge | A•Welcoming | 63.9 | 95.7% | - |
| #5 | Vote. Rally. Earn. | A•Welcoming | 63.8 | 82.1% | - |
| #6 | LLVM-based Solidity compiler. | A•Welcoming | 63.1 | 60.4% | - |
| #7 | A•Welcoming | 62.7 | 65.8% | - | |
| #8 | foundry-rs/forge-std1,058 A collection of helpful contracts and libraries for use with Forge and Foundry | A•Welcoming | 61.6 | 81.8% | - |
| #9 | Morpho fixed rate market | A•Welcoming | 61.2 | 63.2% | - |
| #10 | 0x settlement contracts using Permit2 | A•Welcoming | 61.2 | 55.2% | - |
| #11 | The genesis contracts of BNB Smart Chain. | A•Welcoming | 61.1 | 66.7% | - |
| #12 | OpenZeppelin Contracts is a library for secure smart contract development. | A•Welcoming | 59.7 | 40.0% | 1 |
| #13 | Smart contracts for Across protocol | A•Welcoming | 59.5 | 45.7% | - |
| #14 | 🦄 🦄 🦄 🦄 Peripheral smart contracts for interacting with Uniswap v4 | A•Welcoming | 59.2 | 38.5% | - |
| #15 | The Ethereum Request for Comment repository | A•Welcoming | 58.6 | 28.6% | - |
| #16 | Reproduce DeFi hacked incidents using Foundry. | A•Welcoming | 58.1 | 89.3% | - |
| #17 | Smart contracts for primary drops on EVM chains | B•Solid | 57.9 | 100.0% | - |
| #18 | A static analysis tool for rust, anchor, stylus, and solidity smart contracts. | A•Welcoming | 57.8 | 100.0% | - |
| #19 | A•Welcoming | 57.1 | 58.3% | - | |
| #20 | Hardhat plugin to deploy your smart contracts across multiple EVM chains with the same deterministic address. | B•Solid | 55.8 | 21.2% | - |
| #21 | OUSD and OETH are stablecoins that passively accrue yield while you are holding it | A•Welcoming | 55.5 | 65.8% | - |
| #22 | All the contracts related to the Defi Saver ecosystem | B•Solid | 54.8 | 45.5% | - |
| #23 | Spells for Spark Protocol | B•Solid | 54.1 | 75.0% | - |
| #24 | Materials related to security: docs, checklists, processes, etc... | B•Solid | 53.0 | 100.0% | - |
| #25 | Seaport is a marketplace protocol for safely and efficiently buying and selling NFTs. | B•Solid | 51.4 | 23.1% | - |
| #26 | Smart Contract Submodule For zkSync Era | B•Solid | 51.2 | 40.4% | - |
| #27 | aave/aave-v4209 Aave V4 | B•Solid | 50.6 | 8.7% | - |
| #28 | Factory smart contract to make easier and safer usage of the `CREATE` and `CREATE2` EVM opcodes as well as of `CREATE3`-based (i.e. without an initcode factor) contract creations. | B•Solid | 49.9 | 100.0% | - |
| #29 | Staging repo for MakerDAO weekly executive spells | B•Solid | 49.7 | 33.3% | - |
| #30 | Build lending vaults which connect through Ethereum Vault Connector | B•Solid | 49.6 | 100.0% | - |
| #31 | Core contracts for the Doppler Protocol | B•Solid | 48.5 | 100.0% | - |
| #32 | PancakeSwap Smart Contracts | B•Solid | 48.5 | 100.0% | - |
| #33 | Solidity contracts for Delegate v1 and v2 registries | B•Solid | 48.3 | 100.0% | - |
| #34 | Exercises to learn solidity. This accompanies the RareSkills Learn Solidity resource. | B•Solid | 48.1 | 100.0% | - |
| #35 | BNB Evolution Proposals | B•Solid | 47.7 | 28.6% | - |
| #36 | Implementation of the Farcaster contracts | B•Solid | 47.3 | 100.0% | - |
| #37 | Vectorized/solady3,380 Optimized Solidity snippets. | B•Solid | 47.2 | 75.0% | - |
| #38 | An index repository with submodules for different examples of Certora projects | B•Solid | 47.1 | 100.0% | - |
| #39 | The weiroll virtual machine | B•Solid | 47.1 | 100.0% | - |
| #40 | Contracts repository for The Graph protocol | B•Solid | 46.5 | 66.7% | - |
| #41 | Official repository for core projects comprising the Celo platform | B•Solid | 45.5 | 66.7% | - |
| #42 | A repo to showcase web3 hacks | B•Solid | 45.2 | 50.0% | - |
| #43 | Aave V3 Protocol | B•Solid | 45.0 | 50.0% | - |
| #44 | Foundry-based template for developing Solidity smart contracts | B•Solid | 44.9 | 100.0% | - |
| #45 | PaulRBerg/prb-math1,007 Solidity library for advanced fixed-point math | B•Solid | 44.3 | 100.0% | - |
| #46 | B•Solid | 43.5 | 100.0% | - | |
| #47 | B•Solid | 43.5 | 0.0% | - | |
| #48 | Example and sample projects | B•Solid | 43.5 | 0.0% | - |
| #49 | 🦄 Gasless ERC20 swap settlement protocol 🦄 | B•Solid | 42.1 | 50.0% | - |
| #50 | The most advanced solidity library for merkle (multi) proof verification of different kinds of merkle trees | B•Solid | 40.4 | 100.0% | - |
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 yieldnest/yieldnest-vault, with a C-Rank score of 66.4/100 and a 95.2% 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.