Open-source alternatives to Parity

This project is a collection of blockchain tools providing an Ethereum client node, a virtual machine runtime for smart contract execution, a blockchain wallet manager, and a programmatic network interface. It implements the necessary components to synchronize blockchain state, validate blocks, and process transactions on the Ethereum network. The software includes a dedicated command line interface for managing node operations and monitoring network status. It features a comprehensive suite of cryptographic utilities for generating account keypairs, managing encrypted secret stores, and sign

This project is a Substrate-based blockchain protocol implementation and a modular Rust blockchain runtime. It provides a framework for executing a distributed ledger protocol to maintain a synchronized network of nodes. The system features a peer-to-peer node implementation that manages decentralized communication and local key-value database storage. It includes a BFT-based consensus engine for coordinating block authoring and finality, as well as a WebAssembly-based runtime for isolated execution of state transitions. The protocol organizes domain-specific logic through a modular pallet a

rippled is a peer-to-peer node implementation for the XRP Ledger. It serves as a distributed ledger consensus engine and a blockchain API gateway, allowing servers to validate transactions and maintain a shared, immutable sequence of ledger state. The project features a built-in decentralized exchange engine capable of executing atomic cross-currency payments and managing order books. It includes an on-chain asset management system for issuing and controlling fungible tokens and NFTs, as well as a Byzantine Fault Tolerant system for coordinating validators. The platform provides comprehensiv

Erigon is an Ethereum execution client and blockchain archive node designed to maintain full or archive copies of the blockchain. It functions as a Proof-of-Stake validator, an Ethereum RPC server, and a network validator operation tool, providing the core infrastructure to validate blocks and secure the chain. The project distinguishes itself through high-performance storage and data distribution, utilizing a flat key-value state storage system instead of a Merkle Patricia Trie to increase read and write speeds. It employs BitTorrent-based data distribution for immutable historical blockchai

Stellar Core is the primary software implementation of the Stellar blockchain network, serving as a distributed ledger and a Federated Byzantine Agreement system. It functions as a core node that maintains the shared state of the network and provides a runtime environment for executing WebAssembly smart contracts. The project enables the creation and management of digital assets, including the implementation of decentralized exchanges through distributed orderbooks and automated liquidity pools. It facilitates cross-border payment settlement by routing assets via path payments and bridging di

Bitcore is a blockchain development framework and a set of libraries used to build applications that interact with the Bitcoin network and other blockchain protocols. It provides a multi-chain cryptocurrency wallet implementation, a peer-to-peer client for synchronizing distributed ledger data, and a transaction orchestrator for constructing, signing, and broadcasting transactions. The framework features a standardized JSON-RPC wrapper to normalize communication between applications and diverse blockchain node APIs. It implements hierarchical deterministic wallets that derive keys and address

Grin is a protocol implementation and blockchain node that provides a confidential transaction system. It uses Pedersen Commitments and homomorphic encryption to verify value integrity and ensure a consistent money supply without revealing specific transaction amounts or participant identities. The project distinguishes itself through an interactive transaction exchange model, where wallets coordinate multi-round data exchanges to build signed transactions. To maintain anonymity, the system supports onion-routed transaction delivery and masks originating IP addresses through specialized relay

go-ibax is a blockchain protocol platform and decentralized application infrastructure used to deploy networks with custom governance and token economics. It provides a foundation for building decentralized applications through a framework that integrates identity management and on-chain data storage. The project features a multilingual virtual machine capable of executing smart contracts written in Go, Rust, and Solidity. It implements a sharded blockchain network to increase throughput and a privacy layer utilizing zero-knowledge proofs and homomorphic encryption to anonymize transaction da

java-tron is a Java implementation of a Tron blockchain full node. It provides the core infrastructure for running a network node, validating transactions, and producing blocks. The project includes a proof-of-stake consensus engine, a distributed ledger database, and a smart contract runtime to manage on-chain state transitions. The system is distinguished by its support for both full and lite node operations, utilizing state snapshots to accelerate synchronization and reduce hardware requirements. It features a multi-engine database abstraction that allows for storage migration, partitionin

Blitzar is a verifiable SQL proof engine and cryptographic library designed for verifiable SQL computation. It enables the execution of database queries off-chain while generating zero-knowledge proofs that certify the correctness of the results for on-chain verification. The project distinguishes itself through a GPU-accelerated proof accelerator that offloads heavy cryptographic workloads to graphics processors, reducing the time required for succinct proof generation. It provides high-performance cryptographic primitives for C++ and Rust applications, focusing on elliptic curve operations

Wagmi is a collection of reactive hooks and a toolkit for interacting with Ethereum blockchains. It provides a comprehensive suite of primitives for managing wallet connections, reading smart contract data, and orchestrating on-chain transactions. The project distinguishes itself through a smart contract interface toolkit that retrieves binary interfaces to generate type-safe hooks and function wrappers. This ensures that blockchain inputs and outputs are validated at compile-time. It also features a specialized utility for translating Ethereum Name Service domains into wallet addresses and p

Quorum is a permissioned blockchain framework based on Ethereum, designed for enterprise consortia. It implements a private version of the ledger that restricts network access to authorized participants and uses authority-based consensus mechanisms to achieve transaction finality without energy-intensive mining. The project focuses on data privacy and access control through the use of private smart contracts and encrypted state storage. This ensures that transaction visibility and business logic results remain hidden from unauthorized nodes and are only accessible to designated consortium mem

BigchainDB is a blockchain data management system designed to store large datasets on a distributed ledger while maintaining the query performance of a traditional database. It provides immutable record storage for data and digital assets, ensuring a verifiable history of all entries. The project integrates a decentralized blockchain structure with a NoSQL database backing to enable efficient indexing and complex data lookups. It uses a consensus-based state replication model and immutable transaction logging to prevent unauthorized record alteration. The system exposes the ledger state and

EOS is a Layer 1 blockchain infrastructure and high-throughput transaction engine. It serves as a WebAssembly smart contract platform that manages state transitions and network consensus across a peer-to-peer network. The system utilizes a sandboxed virtual machine for executing smart contract logic and employs a Byzantine Fault Tolerant delegated proof-of-stake consensus mechanism to finalize the global ledger state. It features a resource-based stake model for CPU and memory allocation and an asynchronous messaging system for inter-contract communication to prevent recursive call overflows.

This project is a blockchain node software implementation that maintains a decentralized ledger using the Ouroboros proof-of-stake consensus protocol. It provides a complete environment for operating a distributed record, including a cryptocurrency wallet backend and a peer-to-peer network layer. The system is distinguished by its use of a UTXO-based ledger model and a diffusion-based state synchronization layer for node communication. It integrates a Public Key Infrastructure with TLS-authenticated communication to secure inter-node traffic and employs hierarchical deterministic key derivati

This project is a full-stack implementation of the TON protocol, serving as a layer 1 blockchain protocol designed for transaction processing and smart contract execution. It encompasses the core blockchain validator node, storage daemons, and network logic required to maintain a distributed ledger. The system is distinguished by a sharding architecture and a specialized virtual machine for deploying asynchronous smart contracts. It utilizes a cell-based data storage model for deterministic serialization and an actor-based asynchronous message passing system for communication between contract

Aleth is an Ethereum C++ client and full-node implementation. It provides a virtual machine executor for running and debugging bytecode, a blockchain state debugger, and a serialization library for encoding and decoding data using the Recursive Length Prefix format. The project includes a dedicated mining tool for producing blocks and benchmarking hashing hardware performance. It further distinguishes itself with a state debugger that analyzes pre- and post-execution state changes and generates step-by-step execution traces for the virtual machine. The implementation covers node operations i

Chia is a decentralized blockchain platform that uses a proof-of-space-and-time consensus mechanism, enabling energy-efficient farming on commodity hardware. It implements a full blockchain node, farmer, harvester, timelord, and wallet in Python, prioritizing readability and cross-platform compatibility. The platform manages transactions through a simplified UTXO model that minimizes on-chain state and supports fast validation. The project introduces Chialisp, a Turing-complete functional smart contract language designed for secure and auditable financial transactions. It features a pooling p

snarkOS is a distributed runtime environment and zero-knowledge proof blockchain designed for deploying and managing applications that rely on zero-knowledge cryptographic primitives. It functions as a decentralized ledger that uses zero-knowledge proofs to verify state transitions and transactions without revealing private data. The system utilizes a bonded-account consensus network where validators lock assets as collateral to secure a global state. It features an encrypted state ledger to track application data privately and a GPU-accelerated prover that offloads heavy cryptographic comput

Polkadot is a Substrate-based layer 0 blockchain and distributed ledger node software. It functions as a multi-chain runtime environment and cross-chain interoperability protocol designed to connect and secure multiple independent blockchain shards through a shared relay chain. The system utilizes a relay-chain hub architecture to provide shared security and communication for parallel blockchains. It implements cross-chain message passing to route data and value between networks and uses a WebAssembly-based state transition for deterministic execution of blockchain logic. The software covers

Massa is a multithreaded Layer 1 blockchain and decentralized application platform. It serves as a programmable ledger for deploying smart contracts and executing decentralized operations using a multithreaded architecture to process transactions in parallel. The project features a blockchain web hosting gateway for storing immutable websites and front-end code directly on the ledger to ensure censorship resistance. It also functions as a cross-chain asset bridge for transferring digital assets between different blockchain networks and provides a system for autonomous smart contract execution

Dogecoin is a decentralized cryptocurrency node that enables participation in a peer-to-peer network to validate transactions and maintain a shared, permanent record of ownership. It utilizes a proof-of-work consensus mechanism to secure the blockchain and tracks digital asset transfers through an unspent transaction output model. The software distinguishes itself by integrating anonymity routing to obscure the physical location and identity of participating nodes, allowing for private peer networking. It also provides high-performance messaging interfaces that broadcast real-time transaction

This project is a cryptographic consensus engine and distributed ledger client that functions as a peer-to-peer network node. It enables decentralized network participation by allowing users to independently validate transactions and blocks, ensuring data integrity and consensus without reliance on a centralized authority. The software utilizes an unspent transaction output model to track ownership and verify state transitions across the network. What distinguishes this implementation is its commitment to verifiable security and deterministic operation. It features a reproducible build system

This project is a containerized implementation of a blockchain node for the Base network. It manages the execution and consensus processes of an Ethereum Virtual Machine node within an isolated environment to maintain the network and process blockchain data. The infrastructure includes a specialized interface for processing pending blocks via websockets to reduce latency. It also provides a state synchronization tool that uses pre-computed snapshots to accelerate the process of reaching the current block height. The system covers network identity configuration for mainnet and testnet environ

This project provides the formal technical specifications and reference logic for the Ethereum proof-of-stake consensus layer. It defines the standards for block production, state transition rules, and the beacon chain logic required to ensure consistent network agreement. The implementation covers specialized mechanisms for chain security and efficiency, including fork-choice algorithms for canonical chain determination, committee-based signature aggregation, and KZG-based blob commitments for data availability. It also specifies the protocols for light client synchronization using sync comm

go-ipfs is an implementation of an IPFS node, providing a distributed filesystem and a content-addressable storage system. It enables the storage and retrieval of data based on unique cryptographic hashes rather than fixed network locations, allowing files to be shared across a peer-to-peer network without a central authority. The system utilizes a distributed hash table and a peer-to-peer gossip protocol to route requests and propagate network state and metadata. It organizes data using a Merkle DAG structure to support efficient deduplication and versioning of content. Capabilities include

Fuel Core is a Rust-based implementation of a distributed ledger and a full node for the Fuel v2 protocol. It functions as a layer 2 blockchain client designed to execute binary encoded transactions and synchronize shared state across a decentralized network. The system utilizes a deterministic state machine to ensure all nodes reach the same ledger state and employs a binary-encoded message protocol for network communication. It provides the ability to operate full network nodes or bootstrap private local instances for development and testing. The project covers a broad set of capabilities