Hyperledger is an open source collaborative effort created to advance cross-industry blockchain technologies. It is a global collaboration, hosted by The Linux Foundation, including leaders in finance, banking, IoT, supply chain, manufacturing and technology. Questions? Please visit the FAQ.

Projects

Title	Project	Status	Description
Hyperledger Burrow		INCUBATION	Permissioned Ethereum smart-contract blockchain
Hyperledger Caliper		INCUBATION	Blockchain benchmark framework which allows users to measure the performance of a specific blockchain implementation with a set of predefined use cases.
Hyperledger Cello		INCUBATION	Blockchain management/operation
Hyperledger Composer		INCUBATION	Development framework/tools for building Blockchain business networks
Hyperledger Explorer		INCUBATION	Blockchain Web UI
Hyperledger Fabric		ACTIVE	Distributed ledger in Golang
Hyperledger Grid	Hyperledger Grid	INCUBATION	Platform for building supply chain solutions that include distributed ledger components.
Hyperledger Indy		INCUBATION	Distributed ledger purpose-built for decentralized identity
Hyperledger Iroha		ACTIVE	Distributed ledger in C++
Hyperledger Quilt		INCUBATION	An interoperability solution for blockchains, DLTs and other types of ledgers
Hyperledger Sawtooth		ACTIVE	Distributed ledger with Multi-Language Support
Hyperledger Ursa		INCUBATION	A shared cryptographic library that would enable people (and projects) to avoid duplicating other cryptographic work and hopefully increase security in the process.

Project Links

Working Groups

The following working groups fall under the purview of the Technical Steering Committee.

Name	Description
Architecture Working Group	The Hyperledger Architecture Work Group (AWG) is a technical workgroup focused on developing an architectural framework for Enterprise class distributed ledgers, towards convergence on a modular architecture. This includes identifying common and critical components, providing a functional decomposition of an Enterprise blockchain stack into component layers and modules, regularizing interfaces between the components, and interoperability between ledgers. The AWG serves as a cross-project forum for architects and technologists from the Hyperledger community to exchange ideas and explore alternate architectural options, discuss the tradeoffs, and capture the reasoning behind the choices. The AWG provides recommendations and architectural guidance to the projects under the Hyperledger greenhouse and encourages them towards convergence on a modular architecture. The AWG invites individual Hyperledger projects for architecture and design review to benefit from the expertise from the community as well as to shape the architectural direction of Hyperledger.
Identity Working Group	The purpose of the Identity Working Group is to discuss, research, and document ways to capture, store, transmit and use Identities on the DLT, specifically for the projects under the Hyperledger umbrella. The Identities can be of nodes that participate in the running of the DLT or entities that transact on the DLT.
Learning Materials Development Working Group	The Learning Materials Development working group reports to the Hyperledger Technical Steering Committee. It is focused on developing open source training material (licensed as specified by the Hyperledger Charter) to educate people interested in expanding their knowledge of Hyperledger and its projects. The working group will consult with other Hyperledger working groups, Hyperledger team members, and the project maintainers to identify training needs and develop strategies, as well as, material to address those needs. The output of this working group will be targeted towards both technical and non-technical audiences.
Performance and Scale Working Group	Performance and scalability are two key characteristics of any platform. In terms of most of the Hyperledger projects, both will directly relate to end user satisfaction and ultimately adoption of a project. For instance, if a code base consumes too many system resources or does not complete an action in a reasonable time with respect to other solutions, it may not succeed. Similarly, if a product does not scale well (horizontally and or vertically), it may not succeed. The purpose of the Performance and Scalability Working Group (PSWG) is to discuss, research, and identify key metrics that relate to the performance and scalability of a blockchain and blockchain related technologies.
Smart Contracts Working Group	Smart contracts provide automation in blockchain solutions. They are immutable, decentralized and deterministic, which make them ideal to remove third-parties and let peer-to-peer interactions. Once agreed between the parties and deployed on a distributed ledger, their activities and outcomes can be verified, so they can be trusted by all stakeholders. Everybody involved in DLTs are interested in smart contracts and the benefits they bring, but are also worried because there are many aspects about smart contracts they don't understand including legal and ethical insecurities. The main goal of this workgroup will be to give an academic perspective to this research topic and in parallel make clear to users, developers, researchers, businessmen, decision makers and others interested in smart contracts practical ways to utilize them on the different DLTs that are under the Hyperledger umbrella and explore all potentials from deploying them in everyday software solution scenarios.

Archived Working Groups

Working Group Links

Special Interest Groups

Name	Description
Healthcare SIG	The Hyperledger Healthcare Special Interest Group (HC-SIG) represents an international membership of healthcare and technology professionals united in advancing the state of the healthcare industry through the implementation of enterprise-grade technology solutions utilizing the Hyperledger greenhouse of business blockchain frameworks and tools
Public Sector SIG	Hyperledger Public Sector Special Interest Group (public-sector-sig) is a Special Interest group focused on applying distributed ledger technology in general, and Hyperledger technologies in particular, to the public sector (e.g., government and government-related) uses and needs.
Social Impact SIG	The Social Impact SIG is primarily focused on serving as a platform for exchanging ideas and exploration of ways to use blockchain technology in the context of social good. The Social Impact SIG will work with the other groups and technical teams, especially in the areas of implementation. The SIG will focus on convening a broad ecosystem, leveraging the skills, capabilities and perspectives of individuals from the developer community, the social and humanitarian space, enterprises, government and non-government entities, and beyond
Telecom SIG	The Hyperledger Telecom Special Interest Group is focused on technical and business-level conversations about appropriate use cases for blockchain technology in the Telecom industry.
Trade Finance SIG	The Trade Finance SIG is focused on applying distributed ledger technology in general, and Hyperledger technologies in particular, to trade finance uses and needs.

Special Interest Group Links

Governing Documents of the Hyperledger Technical Community

Charter of the Hyperledger Project overall.
Scope of planned projects covering core ledger functionality.
Code of Conduct for all project workspaces.
Project Lifecycle defines stages of projects within Hyperledger, from Proposal → Incubation → Active.
Project Incubation Exit Criteria required before a project is declared Active and production-ready.
Release Taxonomy provides guidelines for release and pre-release versioning and tags.
Copyright and License Policy
Project Proposals for new projects at Hyperledger.
Working Group Process specifies the process that working groups within Hyperledger conform to.
Security Bug Reporting and Handling Process
Quarterly Project Updates
Quarterly Working Group Updates
Antitrust Policy Notice