Best Realtime Backend / API Products in 2025

An open source Firebase alternative.

Key Supabase features:

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

Open Source

The all-in-one Screenshot API for developers: capture websites, generate PDFs, record videos, and automate it all with powerful, scalable infrastructure. No browser setup, no hassle. Just clean results, fast.

Key ScreenshotMAX features:

Annoyance Blocking Scheduled Screenshot Tasks Full-Page Screenshot Rendering HTML to PDF Conversion

Try for free freemium $19.0 / Monthly

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

Hasura is an open platform to build scalable app backends, offering a built-in database, search, user-management and more.

Key Hasura features:

Real-Time Data Auto-Generated APIs Authorization and Authentication Microservices & Event Triggers

Open Source

JavaScript library for app development using cloud services.

Key AWS Amplify features:

Ease of Use Integration with AWS Services Speed of Deployment Automated Workflows

Open Source backend with realtime database, authentication, file storage and admin dashboard, all compiled in 1 portable executable.

Key PocketBase.io features:

Realtime database Authentication via email/password Authentuication via OAuth2 Files management

Open Source free

Appwrite provides web and mobile developers with a set of easy-to-use and integrate REST APIs to manage their core backend needs.

Key AppWrite features:

Open Source Self-Hosted Comprehensive Backend Multi-Language Support

Open Source

Realtime application framework (Node.JS server).

Key Socket.io features:

Real-time Communication Cross-browser Compatibility Fallback Support Event-driven Architecture

Open Source

Pterodactyl is the free game server management panel designed by users, for users.

Key Pterodactyl features:

Open Source Multigame Support User-Friendly Interface Docker Integration

Open Source

Build applications faster with object and file storage, user authentication, push notifications, dashboard and more out of the box.

Key Parse features:

Open Source Rich Feature Set Cross-Platform Support Community and Documentation

Open Source

It's made for hosting your Minecraft server. It's open source.

Key Pufferpanel features:

User-Friendly Interface Open Source Multi-Game Support Automated Installations

Open Source

Pusher is a hosted API for quickly, easily and securely adding scalable realtime functionality via WebSockets to web and mobile apps.

Key Pusher features:

Real-Time Capabilities Ease of Use Scalability Security

Open Source

The Nexus Sites are a large network of community driven websites that support the free and open...

Key Nexus Mods features:

Extensive Library User-Friendly Interface Community and Support Endorsations and Ratings

The command line tool for quick, simple deployment and management of dedicated game servers.

Key Linux Game Server Managers features:

Ease of Use Wide Game Support Comprehensive Documentation Cost-Effective

Open Source