Appwrite is an open-source backend-as-a-service platform that provides developers with pre-built APIs and SDKs for authentication, databases, file storage, serverless functions, real-time events, messaging, and frontend hosting. It eliminates the need to build common backend infrastructure from scratch, enabling teams to ship applications faster while maintaining full control over their data and infrastructure. The platform supports multiple authentication methods including email, OAuth providers, anonymous sessions, and magic links, with built-in session management, JWT token handling, and GDPR-compliant data encryption at rest and in transit.
The architecture runs as a set of Docker microservices that deploy identically on local development machines, VPS servers, Kubernetes clusters, or Appwrite's managed cloud infrastructure. Official SDKs cover Web, Flutter, iOS, Android, React Native, Node.js, Python, Ruby, and more, enabling cross-platform development from a single backend. Serverless functions execute custom logic in Node.js, Python, Ruby, PHP, and Dart, triggered by events or HTTP endpoints. Recent additions include Appwrite Messaging for email, SMS, and push notifications through a unified API, and Appwrite Sites for static and server-side rendered frontend hosting.
Self-hosted Appwrite is completely free with no usage limits or feature restrictions, making it the most accessible open-source BaaS available. The managed Cloud offering starts with a free Starter tier, a Pro plan at $25 per month per project with 2TB bandwidth and dedicated resource pools, and Scale and Enterprise tiers for larger applications. The platform holds a unique position as the most complete open-source alternative to Firebase, offering comparable convenience without vendor lock-in while maintaining data sovereignty for privacy-conscious organizations and regulated industries.
