There are many blockchain-based open source projects that have been developed over the years. Here are a few examples:
- Bitcoin: Bitcoin is the first and most well-known blockchain-based open source project. It is a decentralized digital currency that uses a peer-to-peer network to facilitate transactions.
- Ethereum: Ethereum is a blockchain-based open source project that allows developers to build decentralized applications (dApps) using smart contracts.
- Hyperledger Fabric: Hyperledger Fabric is an open source enterprise-grade blockchain platform that provides a modular architecture, allowing organizations to plug and play components as needed.
- Corda: Corda is an open source blockchain platform designed for businesses. It enables companies to transact directly with each other in a secure and private manner.
- EOSIO: EOSIO is a blockchain platform that aims to provide high-speed, decentralized applications. It is open source and designed to be scalable and flexible.
- Stellar: Stellar is a blockchain platform that is focused on facilitating cross-border payments and other financial transactions. It is open source and designed to be fast and efficient.
These are just a few examples of the many blockchain-based open source projects that are available today. There are many more being developed all the time as the technology continues to evolve and mature.