Liferay is an enterprise open-source portal and content management system (CMS) designed to help organizations build and manage websites, intranets, extranets, and various web applications. It provides a robust platform for creating digital experiences, collaborating, and connecting with customers, employees, and partners.

Key features of Liferay include:

1. Portal Framework: Liferay provides a flexible and extensible framework for building web portals. It allows developers to create and manage multiple sites with different themes and layouts.

2. Content Management System (CMS): Liferay offers a built-in CMS that enables users to create, organize, and publish content easily. It supports various content types, including articles, blogs, documents, and media files.

3. User Management: Liferay includes a user management system that allows administrators to control user access, permissions, and roles, ensuring secure access to various resources.

4. Collaboration Tools: The platform includes collaboration features such as wikis, message boards, and social networking tools that foster communication and knowledge sharing among users.

5. Personalization: Liferay allows for personalized user experiences by offering dynamic content based on user profiles and preferences, enhancing engagement and user satisfaction.

6. Integration: Liferay supports integration with various third-party systems and applications through APIs, web services, and portlets. This allows organizations to integrate Liferay with their existing systems and extend its capabilities.

7. Mobile Support: Liferay is responsive and mobile-friendly, providing a seamless experience across different devices and screen sizes.

8. Scalability: Liferay is designed to handle high-traffic enterprise-level applications, making it a suitable choice for large organizations with a significant user base.

9. Security: Liferay prioritizes security and provides various features to protect against common web vulnerabilities and threats.

Liferay is available in both a community edition (Liferay Portal CE) and an enterprise edition (Liferay DXP) with additional features and support. As an open-source platform, it benefits from an active community of developers contributing to its growth and improvement.