Firebase Local Emulator Suite

Google · checked 14 Nov 2026

#7 · Cloud Service Emulators

Visit firebase.google.com ↗ Alternatives Firebase Local Emulator Suite vs DynamoDB Local

How it plugs in

—Public API

NoOpen source

YesFree tier

Signal on Cloud Service Emulators6.1#7 of 15

The suite provides local Firebase service emulators for building and testing apps.

Pricing

Local Emulator SuiteNo charge stated · Not statedFree

As firebase.google.com lists them, checked 14 Nov 2026.

Near it

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Runs on

Web
Windows
Mac
Linux
iOS
Android

Facts

Website: firebase.google.com
Price: Free tier
Free trial: No
API compatibility: Each product emulator responds to SDK and REST API calls like production Firebase services.
Configuration security: Without configured settings, Firestore, Realtime Database, and Storage emulators run with open data security.
Emulated services: It covers Firestore, Realtime Database, Storage, Authentication, Hosting, Functions, Pub/Sub, and Extensions.
Function triggers: The Cloud Functions emulator supports HTTP, callable, and background functions triggered by listed Firebase services.
Integration testing: The emulators mimic Firebase service behavior and can support integration tests or QA without production data.
Maker: Firebase is a Google product.
Not supported services: The Cloud Functions shell simulates interaction with Analytics, Remote Config, and Crashlytics, which the suite does not currently support.
Production restriction: Firebase says the emulators are not appropriate for production or as self-hosted Firebase services.
Security Rules: Firestore, Realtime Database, and Storage emulators include Security Rules emulation.
Setup requirements: Installation requires Node.js 16 or higher, Java JDK 11 or higher, and Firebase CLI 8.14.0 or higher.
Unit testing: The Firebase Test SDK supports Node.js unit tests using the Mocha test runner and offers Security Rules and database test helpers.
Use cases: Firebase identifies evaluation, prototyping, development, and continuous integration as suitable workflows.

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