Best CloudBoost.io Alternatives & Competitors in 2025

Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.

Key Firebase features:

Real-time Database Easy Integration Scalability Authentication Services

restdb.io lets you create databases and REST APIs quickly. Development databases are free. Powerful web-based and mobile-friendly data management.

Key restdb.io features:

Ease of Use NoSQL Database API Generation Hosting

Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.

Key Flagsmith features:

Feature Flags Remote Config A/B/X Testing & Optimization Organization Management

Try for free Open Source freemium

API development tool for Web and Mobile developers.

Key deployd features:

Easy Setup JSON APIs Built-in Dashboard Flexibility

Open Source

An open protocol for per-user storage OWN YOUR DATA.

Key RemoteStorage features:

User Control Decentralization Interoperability Open Source

An open source Firebase alternative.

Key Supabase features:

Real-time capabilities PostgreSQL foundation Open-source Ease of use

Open Source

Nakama is an open-source distributed social and realtime server for games and apps.

Key Nakama features:

Scalability Open Source Feature-Rich Cross-Platform

Open Source

PubNub is a real-time messaging system for web and mobile apps that can handle API for all platforms and push messages to any device anywhere in the world in a fraction of a second without having to worry about proxies, firewalls or mobile drop-offs.

Key PubNub features:

Real-time Messaging Global Infrastructure Scalability Security

Native apps, Mobile APIs, Real-time analytics, One Platform.

Key Appcelerator features:

Cross-Platform Development JavaScript-based Unified API Rich Library of Modules and Plugins

Backand is a backend-as-a-service for AngularJS that provides out-of-the-box social login, push notifications, Ionic integration and more.

Key Backand features:

Rapid Development Ease of Integration Scalability Built-in Security

Etebase makes it easy to build end-to-end encrypted applications by taking care of the encryption and its related challenges.

Key Etebase features:

End-to-End Encryption Open Source Cross-Platform Compatibility Developer-Friendly API

Open Source

Mobile marketing solutions across all major mobile platforms.

Key Airship features:

Comprehensive Messaging Platform Rich Media Support Advanced Segmentation and Personalization Analytics and Insights

Self-hosted Firebase.

Key GUN features:

Decentralized Real-time synchronization Offline-first Scalability

Open Source

Customer engagement platform used by over 1 million developers and marketers; the fastest and most reliable way to send mobile and web push notifications, in-app messages, emails, and SMS.

Key OneSignal features:

Ease of Use Multi-Platform Support Free Tier Automation Capabilities

Open Source freemium $9.0 / Monthly (Plus usage-based costs. (Growth Plan). )