Firebase bundles a NoSQL database (Firestore), authentication, file storage, cloud functions, hosting, remote config, and analytics into one platform. For mobile-first apps and prototypes, the speed of going from nothing to a working backend is hard to match. Google's infrastructure handles scale, and the free tier is generous.

The tradeoffs accumulate. Firestore is NoSQL, which means restructuring your data if your use case is relational. Vendor lock-in is high because Firestore's query language and data model are proprietary. Pricing can spike unpredictably with reads, writes, and function invocations. And once your backend needs custom server-side logic beyond what Cloud Functions easily supports, you're working around the platform instead of with it.

This guide covers alternatives that address those limitations, from relational database platforms to self-hosted options and the approach that gives you full infrastructure control.

Firebase Alternatives: An Overview

Feature	Encore	Supabase	Appwrite	Convex	PocketBase
Type	Backend development platform	BaaS (Postgres)	Open-source BaaS	Reactive backend	Self-hosted backend
Database	Your own RDS / Cloud SQL	PostgreSQL	MariaDB	Custom document store	SQLite
Deploy target	Your AWS/GCP account	Supabase Cloud	Self-hosted or Cloud	Convex Cloud or self-hosted	Any server
Infrastructure ownership	Full (your account)	None	Full (if self-hosted)	Full (if self-hosted)	Full (single server)
Auth	Built-in, or bring your own	Built-in (GoTrue)	Built-in	Clerk integration	Built-in
Storage	S3 / GCS (auto-provisioned)	Built-in	Built-in	Built-in	Built-in
Real-time	Pub/Sub (SNS+SQS / GCP Pub/Sub)	Realtime subscriptions	Realtime API	Reactive by default	SSE
Server-side logic	TypeScript/Go API endpoints	Edge Functions (Deno)	Appwrite Functions	Convex functions	None
Vendor lock-in	Low (Docker export, standard cloud)	Moderate (Postgres portable)	Low (self-hosted)	Moderate (custom runtime)	None

Encore

Encore is an alternative for teams that have outgrown Firebase's direct-client BaaS model and want an explicit backend without taking on the infrastructure setup themselves. APIs, services, and supported infrastructure declared with Encore's open source Infra SDK for TypeScript and Go form an application model used for local development and deployment.

Browser and mobile clients call backend endpoints rather than querying a database directly under Security Rules, putting authentication, validation, authorization, and data access in application code.

This also supports AI-first development workflows: agents work from one model of the backend APIs and infrastructure, while type safety and static analysis provide guardrails around the changes they make.

import { api } from "encore.dev/api";
import { SQLDatabase } from "encore.dev/storage/sqldb";
import { Bucket } from "encore.dev/storage/objects";
import { Topic } from "encore.dev/pubsub";

// RDS on AWS, Cloud SQL on GCP, Docker Postgres locally.
const db = new SQLDatabase("app", { migrations: "./migrations" });

// S3 on AWS, GCS on GCP, local storage during development.
const uploads = new Bucket("uploads", { versioned: false });

// SNS on AWS, Pub/Sub on GCP, in-memory locally.
const events = new Topic<AppEvent>("app-events", {
  deliveryGuarantee: "at-least-once",
});

export const createItem = api(
  { method: "POST", path: "/items", expose: true, auth: true },
  async (req: CreateItemRequest): Promise<Item> => {
    const item = await db.queryRow`
      INSERT INTO items (name, owner_id) VALUES (${req.name}, ${req.ownerId})
      RETURNING *`;
    await events.publish({ type: "item.created", itemId: item!.id });
    return item!;
  }
);

The API owns the public contract and uses the declared database, bucket, and topic from backend code. Encore uses those relationships for local infrastructure, deployment, permissions, and observability.

Why teams consider Encore

Authorization lives with the operation it protects. Endpoints authenticate and validate requests before reaching data rather than relying on a separate Security Rules language.

AI agents can build against an explicit backend model. APIs, services, Postgres, Pub/Sub, cron, and storage are type-safe declarations in the same source. Static analysis, generated schemas, and traces help agents implement changes without separately configuring Firebase products and rules.

The backend can run on standard cloud infrastructure. the Encore platform can deploy it to AWS or GCP, or it can run as a standard Docker image. This provides a more portable server-side architecture, but Firebase's offline sync, realtime listeners, hosted Auth, and Security Rules are distinct capabilities rather than drop-in Encore features.

Key features

• Application model, MCP context, and build-time guardrails for AI agents
• Explicit, type-safe APIs with backend authorization
• Infrastructure declarations for SQL databases, Pub/Sub, cron, object storage, caching, and secrets
• Built-in tracing, logs, metrics, and architecture metadata
• Deployment to AWS or GCP, or standard Docker images for self-hosting

Good to know

Encore is not a drop-in substitute for a Firebase project. Firestore and Realtime Database use different data models from Postgres, while Authentication, Security Rules, Storage, Functions, realtime listeners, and offline behavior are separate capabilities to compare. SQL Connect uses Cloud SQL for PostgreSQL and can coexist with an Encore backend.

Running Encore alongside Firebase

Encore can use Firebase Authentication, App Check, Storage, Firestore, Realtime Database, or SQL Connect alongside its own APIs and infrastructure. Clients that access Firebase directly still rely on Security Rules, while Encore APIs enforce authorization in backend code.

Go deeper

• Authentication in Encore
• Streaming APIs
• Coming from Firebase, if you decide to adopt Encore
• Coming from a PaaS

Try Encore

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Supabase

Supabase is the most popular Firebase alternative and the closest in development model. It replaces Firestore with PostgreSQL, GoTrue for auth, S3-compatible storage, and Deno-based edge functions. The client SDK pattern is similar to Firebase, so the migration path is the shortest.

The biggest advantage over Firebase is PostgreSQL. Your data model can be relational with proper joins, foreign keys, and transactions. The pgvector extension adds vector search for AI features without a separate database.

Key features

• PostgreSQL database with real-time subscriptions
• Auth with 10+ providers plus Row Level Security
• File storage
• Edge Functions (Deno)
• Generous free tier

Good to know

Supabase is a managed platform where you don't control the underlying infrastructure. Pricing scales with database size, bandwidth, and function invocations. VPC peering isn't available (PrivateLink exists on the $599/month Team plan for database connections only). If your reason for leaving Firebase is infrastructure control or compliance requirements, Supabase has similar limitations. For a deeper comparison, see our Supabase Alternatives guide.

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Appwrite

Appwrite is an open-source BaaS that you can self-host or use as a managed cloud service. The feature set is similar to Firebase: database, auth, storage, functions, and real-time. The key difference is that self-hosting gives you full control over your infrastructure.

Appwrite uses MariaDB under the hood instead of a NoSQL store, so the data model is more structured than Firestore. The client SDK pattern is similar to Firebase.

Key features

• Self-hosted on any Docker-compatible server
• Database, auth, storage, functions, real-time
• 15+ SDKs across client and server
• Role-based access control
• Active open-source community (55k+ GitHub stars)

Good to know

Self-hosting gives you infrastructure ownership but you take on updates, backups, monitoring, scaling, and security patching. If you don't want to self-host, Appwrite Cloud has the same shared-infrastructure tradeoffs as Firebase and Supabase.

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Convex

Convex is a reactive backend platform. Instead of a traditional database with queries, you write TypeScript functions that Convex runs on its infrastructure. The database is a document store with automatic real-time subscriptions: when data changes, connected clients update immediately.

If real-time reactivity is central to your application, Convex's model is more natural than adding real-time on top of a traditional backend.

Key features

• Automatic real-time updates on all queries
• TypeScript-first with end-to-end type safety
• ACID transactions
• Scheduled functions and cron jobs
• File storage
• Self-hosting available since 2025

Good to know

Convex's database uses a custom document model and doesn't support SQL. Migrating away means rewriting your data access layer. The self-hosted option stores data in SQLite or Postgres, though the deployment tooling is newer than the managed cloud. If you need Postgres compatibility or standard cloud services, Convex isn't the right direction.

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PocketBase

PocketBase is an open-source backend packaged as a single Go binary. Download it, run it, and you get a SQLite database, authentication, file storage, and a real-time API. For solo developers and small projects, the simplicity is unmatched.

Key features

• Single binary, zero external dependencies
• SQLite database with a REST API
• Built-in auth with OAuth2 support
• File storage and real-time subscriptions
• Admin dashboard included

Good to know

PocketBase runs on a single server with SQLite. There's no horizontal scaling, no managed cloud option, and no support for Postgres. If your application outgrew Firebase, moving to another single-server architecture with a simpler database engine may not solve the underlying scaling problem. PocketBase is excellent for personal projects and prototypes, less so for production workloads at scale.

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How to choose

Teams leaving Firebase are usually motivated by one of three things: they need a relational database, they want infrastructure control, or they've outgrown the BaaS model.

Supabase is the most direct Firebase alternative. PostgreSQL replaces Firestore, and the client SDK pattern is familiar. If your main frustration with Firebase is the NoSQL data model, Supabase fixes that while keeping the BaaS development experience. The shared-infrastructure and pricing tradeoffs are similar.

Appwrite gives you the BaaS model with the option to self-host. If you want infrastructure ownership and are willing to manage the hosting, Appwrite is a practical path. Appwrite Cloud has the same shared-infrastructure model as Firebase and Supabase.

Convex is the right choice if real-time reactivity is the core requirement. It solves that problem more naturally than any other platform on this list. The tradeoff is a proprietary data model and no SQL support.

PocketBase works for small projects that need a simple, self-contained backend. If your application outgrew Firebase, PocketBase's single-server SQLite model likely isn't the answer.

Encore is for teams that have outgrown the BaaS model entirely and want server-side control with infrastructure automation. Your backend deploys to standard AWS or GCP services in your own cloud account, with a relational PostgreSQL database, Pub/Sub, cron jobs, object storage, and built-in observability. For teams moving from Firebase to a production backend they own and control, Encore is the most complete option.

Related resources

• Supabase Alternatives in 2026
• How to Migrate from Firebase to AWS
• How to Migrate from Firebase to GCP
• Coming from Firebase
• What is Infrastructure from Code?