# Apostrophe 3 Alpha Release Documentation
ApostropheCMS is a full-featured, open source CMS built with Node.js that seeks to empower organizations by combining in-context editing and headless architecture in a full-stack JS environment.
# Documentation sections
- Getting started: Environment setup, installation, and an overview of the major version changes.
- Coming from A2: For people who already know Apostrophe 2, some highlights of what has changed and how to start upgrading.
- Guide: Discussion of Apostrophe 3 features using lots of code examples.
- Reference: Detailed reference sections for developers.
# About ApostropheCMS
ApostropheCMS is content software for everyone in an organization. It helps teams of all sizes create dynamic digital experiences with elegance and efficiency by blending powerful features, developer happiness, and a low learning curve for content creators. Apostrophe has powered websites and web apps for organizations large and small for over a decade.
ApostropheCMS is released under the MIT License.