firebase-alternative

Open source Auth0/Keycloak alternative. Passkeys, SSO, MFA, passwordless, biometric login. Self-hosted or cloud. Enterprise-ready for SaaS & mobile apps

🚀 A future-proof enterprise web CMS supporting both headless and decoupled approaches. Build any type of app with customizable APIs on ASP.NET Core/.NET Core. Completely open-source and designed for flexibility. Since 2018.

The open-source Firebase for Cloudflare.

Open-source self-hosted feature flags & remote config — a Firebase Remote Config alternative. One REST API, any language, Docker-first. Apache 2.0.

DynamicLink is a lightweight, Firebase-free alternative for handling dynamic links and deep links in web and mobile hybrid environments

Open-source backend in a single C++ binary: instant REST APIs, auth, realtime, admin dashboard. The embeddable PocketBase alternative.

Clorabase is a free & open source backend (BaaS) alternative for android & java apps. Turn your github repo into a NoSQL database and cloud storage for your app

Offline-first, real-time sync engine for web apps. Self-hosted, written in Go: IndexedDB in the browser, SQLite or PostgreSQL on the server.

☁️ Cloud sovereignty for developers. AI agent primitives. BaaS in a binary. Written in Rust.

Postgres-based key-value database backend server, perfect for simple applications that need basic cloud storage / syncing

Open-source self-hosted Supabase/Firebase alternative: multi-tenant backend with per-project PostgreSQL, auth, storage & REST API.

Self-hosted backend for side projects. Key/value store + Event API + Admin dashboard. One PHP file, no Composer, no containers.

Globio - All In One Backend As A Service.

Hosted backend for static and AI-built front ends: OAuth sign-in, a database, file storage, server-side scripts, cron, and hosting. No server to run.

Postgres-powered key-value database backend server, rewritten in Rust. Just the thing for simple applications needing basic cloud storage.

The CLI Bunny.net never shipped — 60 commands across Storage, CDN, DNS, Stream, Edge Scripting, plus a built-in MCP server for AI agents (Claude Code, Claude Desktop).

Self-hostable realtime database with a Firebase-shaped client API — WebSocket gateway, Postgres durability, Redis Streams fanout, Kotlin/Android SDKs

AppGlance for Apple platforms: the Swift SDK. Live, privacy-first app analytics for iOS, macOS, tvOS, watchOS and visionOS. No advertising id, no consent banner, one line to integrate.

Open-source, self-hostable Firebase backend: Firestore's exact wire protocol (gRPC + WebChannel + REST) in Rust on MongoDB, so official Firebase SDKs connect unchanged.

AppSpike SDK for Unity — Remote Config with a Firebase-compatible API (distribution)