Appwrite — #3 Alternative to Firebase

Name: Appwrite
Rating: 4.85 (1331 reviews)

Self-hostable open-source backend platform for web, mobile, and Flutter developers

Provides unified Auth, Databases, Storage, Messaging push notifications, and isolated serverless Functions in Node, Python, Dart, Go, and Rust.

License: BSD-3-Clause · Pricing: Open Core · Compare all Firebase alternatives · Official Website