---
title: Overview
description: "The i2b2 source code is licensed under the Mozilla Public License version 2 with a healthcare disclaimer. This includes but is not limited to all code in the edu.harvard.i2b2.* package namespace. The i2b2 Web Client uses three open source JavaScript…"
url: "https://i2b2.org/docs/licenses/"
updated: "2026-09-15"
category: i2b2 Installation Guide / Licenses
---

# Overview

The i2b2 source code is licensed under the Mozilla Public License version 2 with a healthcare disclaimer. This includes but is not limited to all code in the edu.harvard.i2b2.* package namespace.

The i2b2 Web Client uses three open source JavaScript Libraries:

1. Yahoo! User Interface (YUI)
2. Prototype
3. D3,
4. C3
5. jQuery

The code and respective license agreements for the above libraries can be found in the js-ext directory.