Best Realtime Backend / API Products in 2026

An open source Firebase alternative.

Key Supabase features:

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

Open Source

ZeroTwo is a premium multi-provider AI platform which combines the tools models and features of Claude, Gemini, Grok, Openai and more into one. Canvas, Deep Research, MCP, Connectors, Agents, Projects and even Apps are all available in one place!

Key ZeroTwo AI features:

Versatility Accessibility Natural Language Understanding Tools

Try for free freemium $19.99 / Monthly (Pro Account)

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

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

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

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

JavaScript library for app development using cloud services.

Key AWS Amplify features:

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

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

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

Paper is a fork of the Spigot server implementation (which is itself a fork of CraftBukkit). Paper strives to bring improved performance, more features, and more APIs for developers to build awesome plugins with.

Key PaperMC features:

Performance Optimizations Customizability Plugin Support

Open Source

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

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

Vercel is the platform for frontend developers, providing the speed and reliability innovators need to create at the moment of inspiration.

Key Vercel features:

Easy Deployment Fast Performance Serverless Functions Integration with Next.js