Client libraries and APIs
Firestore supports several mobile and web SDKs, server client libraries, Admin SDKs, Google Cloud client libraries, REST APIs, and other third-party library integrations.
Reference their documentation for finding your language or platform-specific sample and library in the documentation:
https://cloud.google.com/firestore/docs/reference/libraries
If you’d like to try out a sample web application that I built using Firestore REST API on a Java Spring Boot framework, check out this project: