> ## Documentation Index
> Fetch the complete documentation index at: https://docs.healthkeri.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Open Source

> An overview of the most active open source KERI implementations and how they fit into the broader ecosystem.

| Acronym    | Full Name                               | Link                                                          |
| ---------- | --------------------------------------- | ------------------------------------------------------------- |
| KERIpy     | Key Event Receipt Infrastructure Python | [KERIpy Github](https://github.com/WebOfTrust/keripy)         |
| KERIA      | Key Event Receipt Infrastructure Agent  | [KERIA Github](https://github.com/WebOfTrust/keria)           |
| Signify-TS | Signify Type Script                     | [Signify-TS Github](https://github.com/WebOfTrust/signify-ts) |

## Implementations

***

### [KERIpy](https://github.com/WebOfTrust/keripy)

KERIpy is the most mature and widely used KERI implementation, written in Python. It serves as a reference for many
other implementations in the ecosystem.

**Key Features:**

* Support for the core KERI protocol specification
* Comprehensive test suite and regular updates from the KERI community
* Example scripts and tooling to help you bootstrap a KERI environment

**Use Cases:**

* Ideal for anyone wanting a stable, well-documented Python library from which to learn KERI and implement their own
  applications.

***

### [KERIA](https://github.com/WebOfTrust/keria)

KERIA (Key Event Receipt Infrastructure Agent) provides cloud-based agents built on top of the KERI protocol for the
purpose of managing KERI identifiers in a hosted environment.

**Key Features:**

* Preconfigured endpoints for managing KERI events in the cloud
* Integration with KERIpy for event processing

**Use Cases:**

* Organizations or individuals looking to host their own KERI agent or agent based service

***

### [Signify-TS](https://github.com/WebOfTrust/signify-ts)

Signify-TS is a KERI implementation in TypeScript, targeting Node.js and browser-based applications. It is an excellent
choice if your stack is JavaScript/TypeScript-heavy.

**Key Features:**

* Written for modern JavaScript/TypeScript environments; integrate in full-stack or front-end apps.
* Active development to remain aligned with the evolving KERI standard.
* Can be used alongside popular frameworks (React, Angular, Vue) for decentralized identity features.

**Use Cases:**

* Building user-facing web applications that interact with KERI-based identifiers directly in the browser.
* Developers preferring TypeScript’s type-safety and ecosystem.