Browse free open source Blockchain software and projects below. Use the toggles on the left to filter open source Blockchain software by OS, license, language, programming language, and project status.

  • Auth0 for AI Agents now in GA Icon
    Auth0 for AI Agents now in GA

    Ready to implement AI with confidence (without sacrificing security)?

    Connect your AI agents to apps and data more securely, give users control over the actions AI agents can perform and the data they can access, and enable human confirmation for critical agent actions.
    Start building today
  • Automate contact and company data extraction Icon
    Automate contact and company data extraction

    Build lead generation pipelines that pull emails, phone numbers, and company details from directories, maps, social platforms. Full API access.

    Generate leads at scale without building or maintaining scrapers. Use 10,000+ ready-made tools that handle authentication, pagination, and anti-bot protection. Pull data from business directories, social profiles, and public sources, then export to your CRM or database via API. Schedule recurring extractions, enrich existing datasets, and integrate with your workflows.
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  • 1
    Bitcoin

    Bitcoin

    A software-based online payment system

    Bitcoin is a decentralized P2P electronic cash system without a central server or trusted parties. Users hold the crypto keys to their own money and transact directly with each other, with the help of the network to check for double-spending.
    Downloads: 41 This Week
    Last Update:
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  • 2
    Bitcoin Black Core

    Bitcoin Black Core

    BLACK use peer-to-peer technology to operate with no central authority

    Bitcoin Black Core is a peer-to-peer electronic cash system that aims to become sound global money with fast payments, micro fees, privacy, and high transaction capacity (big blocks). In the same way that physical money, such as a dollar bill, is handed directly to the person being paid, Bitcoin Black Core payments are sent directly from one person to another. As a permissionless, decentralized cryptocurrency, Bitcoin Black Core requires no trusted third parties and no central bank. Unlike traditional fiat money, Bitcoin Black Core does not depend on monetary middlemen such as banks and payment processors. Transactions cannot be censored by governments or other centralized corporations. Similarly, funds cannot be seized or frozen — because financial third parties have no control over the Bitcoin Black Core network. Bitcoin Black Core combines gold-like scarcity with the spendable nature of cash. With a limited total supply of 10,5 million coins. Transactions are fast.
    Downloads: 0 This Week
    Last Update:
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  • 3
    PenCoin

    PenCoin

    Coin PenCoin

    PenCoin PEN creates more earning opportunities for people all around the world by utilizing technology. We make it easier for members to find new ways to earn, engage, and advance with our gamified micro-task platform for PEN tokens
    Downloads: 0 This Week
    Last Update:
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