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Instead of Google Firebase Realtime Database

Best Google Firebase Realtime Database Alternatives in 2026

Taken from Mobile Databases, where Google Firebase Realtime Database is listed too, in the same order.

  1. 1

    RxDB

    RxDB is a JavaScript NoSQL database that runs inside an application and stores data locally on the client.

    • Free plan
    • Windows · macOS · Linux · Web
    8.2 Club score
  2. 2

    Espresso

    Espresso is a free, open-source framework for writing automated UI tests for Android apps.

    • Free plan
    • macOS · Linux · Web · iPhone and iPad
    8.2 Club score
  3. 3

    Hive

    Hive is a platform for managing projects, tasks, approvals, billing, and related team work.

    • Free plan
    • Windows · macOS · Linux · Web
    8.1 Club score
  4. 4

    Drift

    Drift is a reactive persistence library for relational data in Dart and Flutter applications.

    • Free plan
    • Windows · macOS · Linux · Web
    8.1 Club score
  5. 5

    GUN

    GUN is a free, open-source decentralized graph database and data protocol for developers building decentralized applications.

    • Free plan
    • Windows · macOS · Linux · Web
    8.0 Club score
  6. 6

    Sparksee

    Sparksee is an embeddable graph database management system for representing and analyzing relationships among entities.

    • Free plan
    • Windows · macOS · Linux · iPhone and iPad
    8.0 Club score
  7. 7

    Firestore

    Firestore is a managed, serverless document database for building AI, web, and mobile applications.

    • Free plan
    • Web · iPhone and iPad · Android · API
    7.8 Club score
  8. 8

    SQLDelight

    SQLDelight is a free, open-source Kotlin library that generates typesafe Kotlin APIs from SQL statements.

    • Free plan
    • Open source
    • Windows · macOS · Linux · Web
    7.7 Club score
  9. 9

    ObjectBox

    ObjectBox is an embedded, object-oriented NoSQL database for mobile apps and IoT devices.

    • Free plan
    • Windows · macOS · Linux · iPhone and iPad
    7.6 Club score
  10. 10

    PouchDB

    PouchDB is a free, open-source JavaScript database inspired by Apache CouchDB and designed for browser applications.

    • Free plan
    • Open source
    • Windows · Linux · Web · iPhone and iPad
    7.6 Club score
  11. 11

    Realm

    Realm is an open-source object database designed to run directly on phones, tablets, and wearables.

    • Free plan
    • Windows · macOS · Linux · iPhone and iPad
    7.6 Club score
  12. 12

    Parse Platform

    • Free plan
    • Linux · Web · iPhone and iPad · Android
    7.6 Club score
  13. 13

    Ditto

    Ditto is a distributed database and Edge SDK for applications that need devices to share data despite unreliable or unavailable network access.

    • Free plan
    • Windows · macOS · Linux · iPhone and iPad
    7.6 Club score
  14. 14

    WatermelonDB

    WatermelonDB is a free, MIT-licensed reactive database framework for React and React Native applications.

    • Free plan
    • Windows · Web · iPhone and iPad · Android
    7.5 Club score
  15. 15

    GRDB.swift

    GRDB.swift is a free Swift toolkit for saving application data in SQLite databases.

    • Free plan
    • macOS · Linux · iPhone and iPad
    7.5 Club score
  16. 16

    WCDB

    WCDB is an open-source database framework based on SQLite and SQLCipher, used in the WeChat application.

    • Free plan
    • Windows · macOS · Linux · iPhone and iPad
    7.4 Club score
  17. 17

    Isar

    Isar is a free, open-source NoSQL database for Flutter applications that need local data access when a network is unavailable.

    • Free plan
    • Web · iPhone and iPad · Android
    7.4 Club score
  18. 18

    CloudKit

    CloudKit is Apple’s cloud service for storing app data in iCloud and keeping it current across devices and the web.

    • Free plan
    • macOS · Web · iPhone and iPad · API
    7.4 Club score
  19. 19

    TBase

    TBase is Tencent-published, open-source database software for distributed hybrid transactional and analytical processing (HTAP).

    • Free plan
    • Windows · macOS · Linux · iPhone and iPad
    7.4 Club score
  20. 20

    LiteDB

    LiteDB is a serverless, embedded .NET NoSQL document database distributed as a single DLL.

    • Free plan
    • Windows · Linux · iPhone and iPad · Android
    7.3 Club score

The whole list: Mobile Databases