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Top 23 Blockchain Open-Source Projects
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union
The trust-minimized, zero-knowledge bridging protocol, designed for censorship resistance, extremely high security, and usage in decentralized finance. (by unionlabs)
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SaaSHub
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Project mention: Fintech on Go: Signing, event loops, and replay protection without an SDK (Part 2) | dev.to | 2026-05-02
go-ethereum: official Go implementation of the Ethereum protocol. Source of TokenContract, types.SignTx, and signer types used in code snippets.
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Project mention: Open Source Project of the Day (Part 19): Folo - AI-Powered Next-Generation Information Reader | dev.to | 2026-03-16
This is Part 19 of the "Open Source Project of the Day" series. Today we explore Folo (GitHub).
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Project mention: Web3 Growth Stack Explained: Tools, KPIs & Strategies for Onchain Growth | dev.to | 2026-03-23
Hey: Focuses on building privacy-centric social experiences.
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Project mention: Bitcoin Dust Attacks: What They Are and How to Defend Against Them | dev.to | 2026-04-14
Modern wallets have a clever way of doing this whereby from a seed, a private key can be derived, and a whole tree of child keys (private and public) can be derived. The whole idea is that each user has a master key, that gives birth to descriptors, that are used to deterministically derive new keypairs, to evolve into a whole tree of keys, so that any key in the tree can be parent to other keys, and there is no limit on the depth of the tree. More on this can be seen on the Bitcoin Book
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ethereumbook
Mastering Ethereum: 2nd Edition, by Andreas M. Antonopoulos, Gavin Wood, Carlo Parisi, Alessandro Mazza, Niccolò Pozzolini
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Documentation
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fabric
Hyperledger Fabric is an enterprise-grade permissioned distributed ledger framework for developing solutions and applications. Its modular and versatile design satisfies a broad range of industry use cases. It offers a unique approach to consensus that enables performance at scale while preserving privacy. (by hyperledger)
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diem
Diem’s mission is to build a trusted and innovative financial network that empowers people and businesses around the world.
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full-blockchain-solidity-course-js
Learn Blockchain, Solidity, and Full Stack Web3 Development with Javascript
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full-blockchain-solidity-course-py
Ultimate Solidity, Blockchain, and Smart Contract - Beginner to Expert Full Course | Python Edition
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chia-blockchain
Chia blockchain python implementation (full node, farmer, harvester, timelord, and wallet)
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DeFi-Developer-Road-Map
DeFi Developer roadmap is a curated Developer handbook which includes a list of the best tools for DApps development, resources and references!
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About Monero: https://getmonero.org
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foundry
Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.
Project mention: Contrarian View: Vyper 0.3.10 Is Overhyped – Solidity 0.8.20 Is Better for Smart Contracts in 2026 | dev.to | 2026-04-29 -
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hardhat
Hardhat is a development environment to compile, deploy, test, and debug your Ethereum software.
Project mention: Stop Guessing, Start Proving: A Guide to Stateful Fuzzing in Foundry | dev.to | 2026-04-27Hardhat
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Chainlink price feeds are the most widely adopted oracle solution in DeFi, securing over $65 billion in total value and serving 80% of DeFi protocols that require external price data. Each feed is a smart contract that returns a latest price, updated by a decentralized network of node operators when prices deviate beyond a threshold (typically 0.5-1%).
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go-ibax
An innovative Blockchain Protocol Platform, which everyone can deploy their own applications quickly and easily, such as Dapp, DeFi, DAO, Cross-Blockchain transactions, etc.
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Blockchain discussion
Blockchain related posts
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The Missing Economic Layer: How AI Agents Will Pay for Their Own Infrastructure
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One-Command Deployment: Self-Host Your AI Wallet with GHCR
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Self-Updating Crypto Infrastructure: Watchtower + GHCR for AI Agent Wallets
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WalletConnect in Claude Desktop: Mobile Approval for AI Agent Transactions
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683 Test Files Later: How We Validate AI Agent Wallet Infrastructure
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From Symbol to Contract: Asset Resolution APIs for Multi-Chain Trading Bots
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Collection is not Callability: PubFi 为什么要为 AI Agent 建立可信的 Crypto Data Gateway
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A note from our sponsor - SaaSHub
www.saashub.com | 11 Jul 2026
Index
What are some of the best open-source Blockchain projects? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | union | 73,931 |
| 2 | go-ethereum | 51,200 |
| 3 | Folo | 38,608 |
| 4 | hey-1 | 29,383 |
| 5 | solidity | 25,669 |
| 6 | bitcoinbook | 25,223 |
| 7 | ethereumbook | 21,520 |
| 8 | gun | 19,070 |
| 9 | kubo | 17,070 |
| 10 | fabric | 16,676 |
| 11 | diem | 16,675 |
| 12 | full-blockchain-solidity-course-js | 14,009 |
| 13 | full-blockchain-solidity-course-py | 11,221 |
| 14 | chia-blockchain | 10,813 |
| 15 | DeFi-Developer-Road-Map | 10,779 |
| 16 | monero | 10,679 |
| 17 | foundry | 10,485 |
| 18 | ethers.js | 8,701 |
| 19 | hardhat | 8,495 |
| 20 | chainlink | 8,222 |
| 21 | lnd | 8,161 |
| 22 | blockchain | 8,057 |
| 23 | go-ibax | 7,854 |
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