There are two categories of projects under Hyperledger. The first is blockchain projects and the second category is relevant tools or modules that support these blockchains.

Currently, there are five blockchain framework projects under the Hyperledger umbrella: Fabric, Sawtooth Lake, Iroha, Burrow, and Indy. Under modules, there are the Hyperledger Cello, Hyperledger Composer, Hyperledger Explorer, and Hyperledger Quilt. The Hyperledger project currently has more than 200-member organizations and is very active with many contributors, with regular meet-ups and talks organized around the globe.

A brief introduction of all these projects follows, after which we will see more details around the design, architecture, and implementation of Fabric and Sawtooth Lake.