Showing 406 open source projects for "java open source"

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  • 1
    Waves Platform Node

    Waves Platform Node

    Host connected to the Waves blockchain network

    Waves Platform Node is a host connected to the Waves blockchain network. Waves is an open source blockchain platform that offers a full blockchain ecosystem for building decentralised applications. Nodes are its critical components, performing several important functions such as processing and validating transactions, and generating and storing blocks. Nodes store full blockchain data, pass this data to other nodes, and check the validity of newly added blocks.
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  • 2
    btcd

    btcd

    An alternative full node bitcoin implementation written in Go (golang)

    It properly downloads, validates, and serves the block chain using the exact rules (including consensus bugs) for block acceptance as Bitcoin Core. We have taken great care to avoid btcd causing a fork to the block chain. It includes a full block validation testing framework which contains all of the 'official' block acceptance tests (and some additional ones) that is run on every pull request to help ensure it properly follows consensus. Also, it passes all of the JSON test data in the...
    Downloads: 1 This Week
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  • 3
    Union

    Union

    Serverless backend platform for Web3-native app development

    Union is a backend-as-a-service (BaaS) framework designed for building Web3-native applications. It provides a serverless execution layer with built-in authentication, event handling, and state management tailored for decentralized systems. Developers can write backend logic using WebAssembly and deploy logic that interacts with smart contracts and blockchain data without managing infrastructure.
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  • 4
    Inkonchain Node

    Inkonchain Node

    How to run an Ink Node

    A Docker Compose–based implementation for running a full or archive node on the InkChain Layer‑2 blockchain (built on Optimism’s Superchain). It’s a fork of simple-optimism-node, tailored to Ink’s feature set and providing scripts to spin up reliable validator infrastructure locally or in production.
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    Atera all-in-one platform IT management software with AI agents

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  • 5
    Aeternity node

    Aeternity node

    Scalable blockchain for the people, smart contracts, state channels

    ...With numerous innovative functionalities and performance far ahead of earlier blockchains, æternity allows its users and community to seamlessly venture into the new era of society, economy, and digital interactions. The æternity blockchain project was born out of a desire for a more fair Internet supported by scalable, open-source and cryptographic software, with a commitment to technical excellence. æternity blockchain itself launched as the public æternity mainnet in 2018. It is now a blossoming community of enthusiasts supported via the æternity crypto foundation. At its core, æternity is a blockchain protocol and a smart contract platform that goes beyond what traditional blockchains do. ...
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  • 6
    Fuels-rs

    Fuels-rs

    Fuel Network Rust SDK

    fuels-rs is a Rust-native Software Development Kit (SDK) for the Fuel blockchain. It facilitates compilation, deployment, transaction crafting, contract interaction, and testing of Sway smart contracts, as well as launching and controlling local Fuel nodes for development or CI workflows.
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  • 7
    Fuel Core

    Fuel Core

    Rust full node implementation of the Fuel v2 protocol

    Fuel-Core is the Rust-based implementation of a full FUEL blockchain node—supporting chain execution, mempool, consensus, GraphQL API, and state management. It powers the Fuel Layer 1 network and enables developers to run local or production nodes with high throughput and low latency.
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  • 8
    Node Binance API

    Node Binance API

    Node Binance API is an asynchronous node.js library

    This project is designed to help you make your own projects that interact with the Binance API. You can stream candlestick chart data, market depth, or use other advanced features such as setting stop losses and iceberg orders. This project seeks to have complete API coverage including WebSockets.
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  • 9
    Graph Node

    Graph Node

    Graph Node indexes data from blockchains such as Ethereum

    The Graph is an indexing protocol for querying networks like Ethereum and IPFS. Anyone can build and publish open APIs, called subgraphs, making data easily accessible. Subgraphs can be composed into a global graph of all the world's public information. This data can be transformed, organized, and shared across applications for anyone to query with just a few keystrokes. Before The Graph, teams had to develop and operate proprietary indexing servers. This required significant engineering and...
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  • Grafana: The open and composable observability platform Icon
    Grafana: The open and composable observability platform

    Faster answers, predictable costs, and no lock-in built by the team helping to make observability accessible to anyone.

    Grafana is the open source analytics & monitoring solution for every database.
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  • 10
    AirGap Vault

    AirGap Vault

    Installed on a smartphone that has no connection to any network

    AirGap is a crypto wallet system that lets you secure cypto assets with one secret on an offline device. The AirGap Vault application is installed on a dedicated device that has no connection to any network, thus it is air-gapped. The AirGap Wallet is installed on your everyday smartphone. AirGap Vault is responsible for secure key generation. Entropy from audio, video, touch and accelerometer are used together with the output of the hardware random number generator. The generated secret is...
    Downloads: 1 This Week
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  • 11
    Plutus

    Plutus

    The Plutus language implementation and tools

    Plutus is the smart contract development framework for the Cardano blockchain, created using Haskell. It provides the core infrastructure for writing, testing, and deploying secure, deterministic smart contracts on the Cardano platform. Plutus includes a custom functional language (Plutus Core), a higher-level embedded DSL (Plutus Tx) for writing contracts in Haskell, and an off-chain infrastructure for managing interactions. It ensures strong correctness guarantees through formal...
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  • 12
    Dash Core staging tree

    Dash Core staging tree

    Reinventing cryptocurrency

    ...Dash uses peer-to-peer technology to operate with no central authority, managing transactions and issuing money are carried out collectively by the network. Dash Core is the name of the open-source software which enables the use of this currency. Ready to start making everyday purchases with digital cash? DashDirect makes it fast & easy with savings every time you spend! Grab a coffee, buy a plane ticket, or pay your phone bill. Dash is growing and is accepted by new businesses every day. Experience cryptocurrency payments in an enhanced easy-to-use user experience and with social factors like username, contacts, and personalization. ...
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  • 13
    Mask Network

    Mask Network

    The portal to the new, open Internet

    Mask Network brings privacy and benefits from Web3 to social media like Facebook & Twitter - with an open-sourced browser extension. Use the Mask Extension to hide your content from prying eyes and allow only your target audience to see it. If you’re launching a new project on the Ethereum, BSC, Polygon, or Arbitrum networks, ITOs are a completely new way of launching decentralized assets fairly. With integrated widgets on social media platforms, you’ll be able to view the latest prices of...
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  • 14
    Mythril

    Mythril

    Security analysis tool for EVM bytecode. Supports smart contracts

    Mythril is a security analysis tool for EVM bytecode. It detects security vulnerabilities in smart contracts built for Ethereum, Hedera, Quorum, Vechain, Roostock, Tron and other EVM-compatible blockchains. It uses symbolic execution, SMT solving and taint analysis to detect a variety of security vulnerabilities. It's also used (in combination with other tools and techniques) in the MythX security analysis platform. If you are a smart contract developer, we recommend using MythX tools which...
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  • 15
    The Ethers Project

    The Ethers Project

    Complete Ethereum library and wallet implementation in JavaScript

    A complete Ethereum wallet implementation and utilities in JavaScript (and TypeScript). Keep your private keys in your client, safe and sound. Import and export JSON wallets (Geth, Parity and crowdsale) Import and export BIP 39 mnemonic phrases (12 word backup phrases) and HD Wallets (English as well as Czech, French, Italian, Japanese, Korean, Simplified Chinese, Spanish, Traditional Chinese. Meta-classes create JavaScript objects from any contract ABI, including ABIv2 and Human-Readable...
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  • 16
    Decred

    Decred

    Decred daemon in Go (golang)

    dcrd is the full-node implementation of Decred, a hybrid proof-of-work/proof-of-stake cryptocurrency focused on decentralized governance, long-term sustainability, and robust network security. Written in Go, dcrd provides all the core consensus, networking, and validation logic necessary for Decred nodes to participate in the network. It plays a critical role in enforcing consensus rules, managing peer connections, and enabling advanced features like on-chain voting and self-funding via a...
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  • 17
    Cy

    Cy

    Hackers terminal browser of Cyber blockchains

    Cy - a nushell wrapper, a client for the Cyber family blockchains (bostrom, pussy) and IPFS. Bostrom is the name of the consensus computer that maintains a general-purpose, permissionless informational graph where nodes are CIDs of files in the IPFS network, and edges are Cyberlinks (consisting of source, destination, author, height - records) written into the blockchain. The information written into the blockchain is secured to remain in existence as long as the blockchain is operative. The...
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  • 18
    web3.php

    web3.php

    A php interface for interacting with the Ethereum blockchain

    A php interface for interacting with the Ethereum blockchain and ecosystem. Assign a value to outside scope(from callback scope to outside scope) Due to the callback is not like a javascript callback, if we need to assign value to outside scope, we need to assign a reference to the callback. If you are using docker as a development machine, you can try ethdock to run local Ethereum blockchain, just simply run docker-compose up -d testrpc and expose the 8545 port.
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  • 19
    useDapp

    useDapp

    Framework for rapid Dapp development. Simple. Robust. Extendable

    Framework for rapid Dapp development. Simple. Robust. Extendable. Testable. Uses React hooks as your primary building ingredient. Refreshes on a new block, wallet change or network change. Combines multiple blockchain calls into a single multicall. Autorefresh on wallet and network change. Connect to multiple networks at once. Manage transaction status with ease. Transaction history and notifications. Just add an npm package and you're good to go! WalletConnect is working out-of-the-box....
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  • 20
    vyper

    vyper

    Pythonic Smart Contract Language for the EVM

    See Installing Vyper to install vyper. See Tools and Resources for an additional list of framework and tools with vyper support. See Documentation for the documentation and overall design goals of the Vyper language. See Learn.Vyperlang.org for learning Vyper by building a Pokémon game. See try.vyperlang.org to use Vyper in a hosted jupyter environment! There is also an online compiler available you can use to experiment with the language and compile to bytecode and/or IR. While the vyper...
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  • 21
    Nethermind

    Nethermind

    A robust execution client for Ethereum node operators.

    Nethermind is a high-performance, highly configurable Ethereum execution client built on .NET and designed for professional node operators. It provides fast synchronization, reliable JSON-RPC access, and support for major consensus mechanisms including PoS, Ethash, Clique, and AuRa. With features like Grafana dashboards and enterprise-grade logging, Nethermind makes monitoring and maintaining healthy nodes straightforward. Its architecture emphasizes speed and resilience, synchronizing to...
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  • 22
    Nimiq Blockchain

    Nimiq Blockchain

    JavaScript implementation of the Nimiq protocol

    Nimiq is a unique open-source payment system. It empowers all humans with decentralized but easy payments. One-click creates a node in your browser. Send and receive directly to the blockchain and be truly independent. A simple, secure and censorship-resistant payment protocol, native to the web. Nimiq is a decentralized, censorship-resistant payment protocol native to the web, with its own diverse ecosystem of apps.
    Downloads: 0 This Week
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  • 23
    Shardeum

    Shardeum

    Shardeum is an EVM based autoscaling blockchain

    Shardeum is an EVM‑compatible layer‑1 blockchain platform that leverages dynamic state sharding to deliver linear scalability, consistently low transaction fees, strong decentralization, and high throughput for decentralized application developers. Shardeum is an innovative EVM-compliant blockchain platform that leverages dynamic state sharding to achieve unprecedented scalability. By implementing a sharding model, Shardeum ensures faster processing times and lower transaction costs without...
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  • 24
    Fuels‑TS

    Fuels‑TS

    Fuel Network Typescript SDK

    Fuels‑TS is a TypeScript SDK by FuelLabs for building decentralized applications on the Fuel blockchain. It provides tools for deploying and interacting with Sway smart contracts, managing wallets, crafting transactions, and initializing local development environments. Build forc workspace and generate Typescript types for everything. Built-in CLI for project bootstrap, build, deploy, dev server, and type generation. The primary license for this repo is Apache 2.0. Rich documentation...
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  • 25
    conflux-rust

    conflux-rust

    The official Rust implementation of Conflux protocol

    conflux-rust is the Rust implementation of Conflux, a high-performance Layer 1 blockchain designed to deliver high throughput without compromising decentralization or security. Conflux introduces a Tree-Graph consensus mechanism that allows parallel block processing while maintaining consensus integrity. This implementation focuses on performance and is compatible with the Ethereum Virtual Machine (EVM), enabling developers to deploy smart contracts written for Ethereum. It provides a robust...
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