Authentication: Firebase provides built-in user authentication methods, including email/password authentication, social network authentication (Google, Facebook, Twitter) and phone number authentication. This helps you easily and securely manage users and authentication in your application.

Realtime Database: Firebase provides a real-time database that allows you to store and sync data instantly across different devices. By using real-time databases, you can build applications that share live data and interact instantly with data from the database.

Cloud Firestore: This is a flexible and powerful document database from Firebase. Firestore allows storing and querying data in a document model, making it easy to organize and access data in the application. It provides real-time data synchronization and custom permissions to control user access to data.

Cloud Storage: Firebase provides a cloud storage service that allows you to store and manage files, images, videos, and other multimedia data in your apps. It provides easy file upload and download and supports secure and reliable file management.

Cloud Messaging: Firebase Cloud Messaging (FCM) allows notifications to be sent to mobile and desktop devices. By using FCM, you can send messages.