Showing 360 open source projects for "java open source"

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  • Cloud tools for web scraping and data extraction Icon
    Cloud tools for web scraping and data extraction

    Deploy pre-built tools that crawl websites, extract structured data, and feed your applications. Reliable web data without maintaining scrapers.

    Automate web data collection with cloud tools that handle anti-bot measures, browser rendering, and data transformation out of the box. Extract content from any website, push to vector databases for RAG workflows, or pipe directly into your apps via API. Schedule runs, set up webhooks, and connect to your existing stack. Free tier available, then scale as you need to.
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  • 1
    Chainlink

    Chainlink

    node of the decentralized oracle network

    Securely connect smart contracts with off-chain data and services. Chainlink decentralized oracle networks provide tamper-proof inputs, outputs, and computations to support advanced smart contracts on any blockchain. Start building your hybrid smart contract with Chainlink. Use decentralization, trusted nodes, premium data, and cryptographic proofs to connect highly accurate and available data/APIs to any smart contract. Build on a flexible framework that can retrieve data from any API,...
    Downloads: 3 This Week
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  • 2
    xrpl.js

    xrpl.js

    A JavaScript/TypeScript API for interacting with the XRP Ledger

    It’s fast, energy-efficient, and reliable. With ease of development, low transaction costs, and a knowledgeable community, it provides developers with a strong open-source foundation for executing on the most demanding projects, without hurting the environment. Open source, open to anyone to build on, maintained by the community. Tools and documentation that speed development and reduce time to market. Capable of settling thousands of transactions in seconds. At fractions of a penny per transaction, costs are inexpensive enough to enable a wide variety of use cases. ...
    Downloads: 4 This Week
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  • 3
    Jesse

    Jesse

    An advanced crypto trading bot written in Python

    Jesse is an open-source AI agent framework designed to help developers build and orchestrate intelligent workflows that combine large language models (LLMs) with external tools, automation logic, and real-world actions. It acts as an agent manager where you can define tasks, contexts, and tool integrations so that AI reasoning is reliably connected to deterministic procedures like API calls, data retrieval, and task execution.
    Downloads: 2 This Week
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  • 4
    Remix Project

    Remix Project

    Compiler and IDE that enables users to build Ethereum contracts

    Remix Project is a rich toolset including Remix IDE, a comprehensive smart contract development tool. The Remix Project also includes Remix Plugin Engine and Remix Libraries which are low-level tools for wider use. Remix IDE is used for the entire journey of contract development by users of any knowledge level. It fosters a fast development cycle and has a rich set of plugins with intuitive GUIs. The IDE comes in 2 flavors and a VSCode extension. Supported browsers: Firefox v100.0.1 &...
    Downloads: 3 This Week
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  • DAT Freight and Analytics - DAT Icon
    DAT Freight and Analytics - DAT

    DAT Freight and Analytics operates DAT One truckload freight marketplace

    DAT Freight & Analytics operates DAT One, North America’s largest truckload freight marketplace; DAT iQ, the industry’s leading freight data analytics service; and Trucker Tools, the leader in load visibility. Shippers, transportation brokers, carriers, news organizations, and industry analysts rely on DAT for market trends and data insights, informed by nearly 700,000 daily load posts and a database exceeding $1 trillion in freight market transactions. Founded in 1978, DAT is a business unit of Roper Technologies (Nasdaq: ROP), a constituent of the Nasdaq 100, S&P 500, and Fortune 1000. Headquartered in Beaverton, Ore., DAT continues to set the standard for innovation in the trucking and logistics industry.
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  • 5
    Learning Bitcoin from the Command Line

    Learning Bitcoin from the Command Line

    A complete course for learning Bitcoin programming and usage

    ...It is not yet ready for use. Learning Bitcoin from the Command Line is a project of Blockchain Commons. We are proudly a "not-for-profit" social benefit corporation committed to open source & open development. Our work is funded entirely by donations and collaborative partnerships with people like you. Every contribution will be spent on building open tools, technologies, and techniques that sustain and advance blockchain and internet security infrastructure and promote an open web. We are also tentatively considering what we could include in a v3.0 of the course.
    Downloads: 4 This Week
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  • 6
    Libplanet

    Libplanet

    Blockchain in C#/.NET for on-chain, decentralized gaming

    Libplanet is a .NET library for creating multiplayer online game in decentralized fashion, which means the whole gameplay occurs on a peer-to-peer network among equal nodes rather than an authorized central server. Under the hood, it incorporates many features (e.g., digital signature, BFT consensus, data replication) of a blockchain.
    Downloads: 2 This Week
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  • 7
    Spacemesh

    Spacemesh

    Go Implementation of the Spacemesh protocol full node

    Go-Spacemesh is the official Go implementation of the Spacemesh protocol, a novel blockchain based on Proof of Space-Time (PoST) designed for fair mining and energy efficiency. Unlike Proof of Work, PoST leverages unused hard drive space to secure the network, enabling anyone with a computer to participate without specialized hardware. Spacemesh introduces a mesh-based block DAG (Directed Acyclic Graph) structure for scalable and parallel consensus. The project aims to build a decentralized,...
    Downloads: 1 This Week
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  • 8
    Status - a Mobile Ethereum OS

    Status - a Mobile Ethereum OS

    A free (libre) open source, mobile OS for Ethereum

    ...Safely send, store and receive cryptocurrencies including ERC20 and ERC721 tokens with the Status crypto wallet. Only you hold the keys to your funds. Status' intuitive design protects you and your funds from attacks. Status uses an open-source, peer-to-peer protocol, and end-to-end encryption to protect your messages from third parties. Keep your private messages private with Status. Browse the growing ecosystem of DApps including marketplaces, exchanges, games, and social networks. The latest security standards ensure a private browsing experience. You will never be asked for a phone number, email address, or bank account when generating a Status account. ...
    Downloads: 1 This Week
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  • 9
    PIVX

    PIVX

    Protected Instant Verified Transactions - Core wallet

    PIVX (Protected Instant Verified Transaction) is a privacy-focused cryptocurrency that emphasizes secure and anonymous transactions. Built upon the Bitcoin Core codebase, PIVX integrates advanced privacy protocols to ensure user confidentiality. It aims to provide fast, low-cost transactions while maintaining a high level of security and decentralization.​
    Downloads: 1 This Week
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  • Rent Manager Software Icon
    Rent Manager Software

    Landlords, multi-family homes, manufactured home communities, single family homes, associations, commercial properties and mixed portfolios.

    Rent Manager is award-winning property management software built for residential, commercial, and short-term-stay portfolios of any size. The program’s fully customizable features include a double-entry accounting system, maintenance management/scheduling, marketing integration, mobile applications, more than 450 insightful reports, and an API that integrates with the best PropTech providers on the market.
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  • 10
    BNB Chain

    BNB Chain

    A Binance Smart Chain client based on the go-ethereum fork

    The goal of Binance Smart Chain is to bring programmability and interoperability to Binance Chain. In order to embrace the existing popular community and advanced technology, it will bring huge benefits by staying compatible with all the existing smart contracts on Ethereum and Ethereum tooling. And to achieve that, the easiest solution is to develop based on the go-Ethereum fork, as we respect the great work of Ethereum very much. Binance Smart Chain starts its development based on...
    Downloads: 3 This Week
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  • 11
    Swarm Bee

    Swarm Bee

    Bee is a Swarm client implemented in Go

    Bee is a Swarm client implemented in Go. It’s the basic building block for the Swarm network: a private; decentralized; and self-sustaining network for permissionless publishing and access to your (application) data.There are two versioning schemes used in Bee that you should be aware of. The main Bee version does NOT follow strict Semantic Versioning. Bee hosts different peer-to-peer wire protocol implementations and individual protocol breaking changes would necessitate a bump in the major...
    Downloads: 2 This Week
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  • 12
    Gnosis Safe Contracts

    Gnosis Safe Contracts

    Gnosis Safe allows secure management of blockchain assets

    The most trusted platform to manage digital assets on Ethereum. Access the most recent version of the Safe directly in your browser. Download the Safe as a static desktop application for Windows, MacOS or Linux. Conveniently manage your digital assets on the go. Fully customize how you manage your company crypto assets, with the option to require a predefined number of signatures to confirm transactions. Require multiple team members to confirm every transaction in order to execute it, which...
    Downloads: 2 This Week
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  • 13
    MyEtherWallet

    MyEtherWallet

    MyEtherWallet to interact with the Ethereum blockchain

    MEW (MyEtherWallet) is a free, client-side interface helping you interact with the Ethereum blockchain. Our easy-to-use, open-source platform allows you to generate wallets, interact with smart contracts, and so much more. Easily access all you favorite apps across Ethereum and Polkadot chains, buy crypto, swap tokens, and manage your NFTs. Welcome to the multichain future. ETH Blocks is an NFT series representing mined Ethereum blocks and their properties.
    Downloads: 1 This Week
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  • 14
    Lighthouse Ethereum

    Lighthouse Ethereum

    Ethereum consensus client in Rust

    Lighthouse is an Ethereum consensus client that connects to other Ethereum consensus clients to form a resilient and decentralized proof-of-stake blockchain. Lighthouse is available on Linux and macOS via the Homebrew package manager. We implement the specification as defined in the ethereum/consensus-specs repository. Becoming an Ethereum consensus validator is rewarding, but it's not for the faint of heart. You'll need to be familiar with the rules of staking (e.g., rewards, penalties,...
    Downloads: 1 This Week
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  • 15
    Ethereum ETL

    Ethereum ETL

    Python scripts for ETL (extract, transform and load) jobs for Ethereum

    Python scripts for ETL (extract, transform and load) jobs for Ethereum blocks, transactions, ERC20 / ERC721 tokens, transfers, receipts, logs, contracts, internal transactions. Data is available in Google BigQuery. Ethereum ETL lets you convert blockchain data into convenient formats like CSVs and relational databases.
    Downloads: 1 This Week
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  • 16
    Cosmos SDK

    Cosmos SDK

    A Framework for Building High Value Public Blockchains

    ...Cosmos SDK is used to build Gaia, the first implementation of the Cosmos Hub. The Cosmos SDK has mostly stabilized, but we are still making some breaking changes. The Cosmos SDK is an open-source framework for building multi-asset public Proof-of-Stake (PoS) blockchains, like the Cosmos Hub, as well as permission Proof-of-Authority (PoA) blockchains. Blockchains built with the Cosmos SDK are generally referred to as application-specific blockchains. The goal of the Cosmos SDK is to allow developers to easily create custom blockchains from scratch that can natively interoperate with other blockchains.
    Downloads: 1 This Week
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  • 17
    Bitcart

    Bitcart

    Bitcart is a platform for merchants, users and developers

    An open-source platform for managing cryptocurrency payments and stores without intermediaries.
    Downloads: 0 This Week
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  • 18
    CCXT

    CCXT

    JavaScript/TypeScript/Python/C#/PHP cryptocurrency trading API

    The ccxt library is a collection of available crypto exchanges or exchange classes. Each class implements the public and private API for a particular crypto exchange. All exchanges are derived from the base Exchange class and share a set of common methods. To access a particular exchange from ccxt library you need to create an instance of corresponding exchange class. Supported exchanges are updated frequently and new exchanges are added regularly.
    Downloads: 1 This Week
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  • 19
    Monero

    Monero

    Secure, Private Digital Currency

    Monero is a secure, private, untraceable cryptocurrency. It is decentralized-- dependent on a distributed peer-to-peer consensus network where every transaction is cryptographically secured. With Monero you are your own bank, you control your funds and can spend safely. No one else can see your balances, track your transfers or any other transactions unless you allow them to. Monero uses ring signatures, ring confidential transactions, and stealth addresses making it absolutely private...
    Downloads: 1 This Week
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  • 20
    Cronos PoS Chain

    Cronos PoS Chain

    Croeseid Testnet and beyond development

    Cronos PoS Chain is a public, open source, and permissionless blockchain, a fully decentralized network with high speed and low fees, designed to be a public good that helps drive mass adoption of blockchain technology through use cases like Payments, DeFi, and NFTs.
    Downloads: 0 This Week
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  • 21
    Krypto-trading-bot

    Krypto-trading-bot

    Self-hosted crypto trading bot, automated high frequency market

    K is a family of (very customizable) very low latency market-making trading bots with a fully featured web interface. It can place and cancel orders on one of the several compatible exchanges in less than a few milliseconds per order on a decent machine. If you don't want to configure or hardcode your own trading strategies in your own machine, you can run strategies from someone else at kryll.io (or at any other trading community out there). Our bots run on unix-like systems. Persistence is...
    Downloads: 2 This Week
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  • 22
    ADAMANT Messenger Progressive Web App

    ADAMANT Messenger Progressive Web App

    ADAMANT decentralized Messenger, progressive web application

    ...ADAMANT is a decentralized anonymous messenger based on the blockchain system. It’s independent of any governments or corporations, and even developers due to the distributed network infrastructure that contains an open-source code. The ADAMANT blockchain system belongs to its users. Nobody can control, block, deactivate, restrict or censor accounts. Users take full responsibility for their content, messages, media, and goals and intentions of using the messenger. Privacy is the main concept of ADAMANT, neither phone numbers nor emails are required. ...
    Downloads: 1 This Week
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  • 23
    OpenZeppelin Contracts

    OpenZeppelin Contracts

    OpenZeppelin Contracts is a library for secure smart contracts

    A library for secure smart contract development. Build on a solid foundation of community-vetted code. OpenZeppelin Contracts uses semantic versioning to communicate backward compatibility of its API and storage layout. To keep your system secure, you should always use the installed code as-is, and neither copy-paste it from online sources nor modify it yourself. The library is designed so that only the contracts and functions you use are deployed, so you don't need to worry about it...
    Downloads: 1 This Week
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  • 24
    uAgents

    uAgents

    A fast and lightweight framework for creating decentralized agents

    uAgents is a library developed by Fetch.ai that allows for creating autonomous AI agents in Python. With simple and expressive decorators, you can have an agent that performs various tasks on a schedule or takes action on various events.
    Downloads: 1 This Week
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  • 25
    Web3Modal

    Web3Modal

    A single Web3 provider solution for all Wallets

    Your on-ramp to web3 multichain. Web3Modal is a versatile library that makes it super easy to connect users with your Dapp and start interacting with the blockchain. v2 is in early alpha and we are continuously adding more features, examples and documentation. As of now we support use cases with react and evm chains. Support for more frameworks and chains is on the way. Getting started with web3modal is as easy as installing a few packages, one for your preferred front-end framework i.e....
    Downloads: 1 This Week
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