Best Open Source blockchain Libraries
A curated list of the most popular GitHub repositories tagged with blockchain. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.
#1unionlabs/union
The trust-minimized, zero-knowledge bridging protocol, designed for censorship resistance, extremely high security, and usage in decentralized finance.
#2FuelLabs/fuel-core
Rust full node implementation of the Fuel v2 protocol.
#3ethereum/go-ethereum
Go implementation of the Ethereum protocol
#4anoma/anoma
Reference implementation of Anoma
#5linera-io/linera-protocol
Main repository for the Linera protocol
#6shardeum/shardeum
Shardeum is an EVM based autoscaling blockchain
#7bigint/hey
Hey is a decentralized and permissionless social media app built with Lens Protocol 🌿
#8zama-ai/fhevm
FHEVM, a full-stack framework for integrating Fully Homomorphic Encryption (FHE) with blockchain applications
#9argotorg/solidity
Solidity, the Smart Contract Programming Language
#10bitcoinbook/bitcoinbook
Mastering Bitcoin 3rd Edition - Programming the Open Blockchain
#11amark/gun
An open source cybersecurity protocol for syncing decentralized graph data.
#12diem/diem
Diem’s mission is to build a trusted and innovative financial network that empowers people and businesses around the world.
#13hyperledger/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.
#14UFund-Me/Qbot
[🔥updating ...] AI 自动量化交易机器人(完全本地部署) AI-powered Quantitative Investment Research Platform. 📃 online docs: https://ufund-me.github.io/Qbot ✨ :news: qbot-mini: https://github.com/Charmve/iQuant
#15ethers-io/ethers.js
Complete Ethereum library and wallet implementation in JavaScript.
#16solana-foundation/anchor
⚓ Solana Program Framework
#17Consensys/quorum
A permissioned implementation of Ethereum supporting data privacy
#18erigontech/erigon
Ethereum implementation on the efficiency frontier
#19paritytech/polkadot-sdk
The Parity Polkadot Blockchain SDK
#20OneKeyHQ/app-monorepo
Secure, open source and community driven crypto wallet runs on all platforms and trusted by millions.
#21bitcoin-dot-org/Bitcoin.org
Bitcoin.org Website
#22NethermindEth/nethermind
A robust, high-performance execution client for Ethereum node operators.
#23iotexproject/iotex-core
Official implementation of IoTeX blockchain protocol in Go. An ultra-efficient EVM blockchain offering 1000 TPS with instant 1-block finality. Perfect for DeFi, DePIN tokenomics, Identities, and any trusted logic requiring Web3 composability
#24Sidiora-Labs/Paxeer-X-Network
Paxeer X is a Distributed HyperState Machine for payments, code execution and intent routing. Designed for Machines and the Users operating them.
#25hiero-ledger/hiero-sdk-js
A JavaScript/TypeScript SDK for Hiero: A Javascript toolkit for creating, updating, and interacting with on-ledger assets and smart contracts on Hedera and other Hiero networks
#26blocksecteam/metasuites
MetaSuites powered by BlockSec. Help crypto users explore blockchain smoothly.
#27propeller-heads/tycho
Low latency indexer service for blockchain data.
#28dfinity/oisy-wallet
A browser-based, multi-chain wallet hosted on the Internet Computer
#29xlnfinance/xln
0.1 - Q1 2026. DRAFT xln: a credit+collateral netting-account L2 for all EVM and future CBDC jurisdictions—unicast O(1) per hop, link-capped risk, local state, sovereign exits.