People weigh Firebase alternatives when they want real SQL/Postgres instead of NoSQL, worry about the Blaze plan having no spending cap by default, hit NoSQL query limits, or want an open-source backend they can self-host. Cold starts and permission-denied security-rules errors also push some teams to shop around.
From our builds
The Firebase surprise we run into most is a Blaze project with no budget alert set — there's no default spending cap, so a runaway query or a tight listener loop can quietly climb the bill before anyone notices. Setting an alert is step one on every Firebase handoff.
How we picked
Database model (SQL vs NoSQL)
Firebase is NoSQL; many switchers specifically want relational Postgres for complex queries.
Cost predictability
Firebase's uncapped Blaze billing is a common worry, so how each alternative bills matters a lot.
Self-hosting and openness
Some teams want to escape Google's cloud and run an open-source backend themselves.
Breadth of BaaS features
Firebase bundles auth, storage, functions and hosting, so a fair alternative should be judged on how complete it is.
AI-tool and ecosystem fit
How well a backend plugs into modern AI builders and frameworks affects how fast you can ship.
The contenders, ranked
Supabase
Backend-as-a-Service (open-source, PostgreSQL)Open-source Postgres BaaS — DB, auth, storage, functions, realtime.
- Best for
- Anyone wanting real SQL/Postgres with auth and storage, and the default for AI builders.
- Pricing from
- $25/mo (Pro, 8GB DB)
- Free tier
- Free — 2 projects, 500MB DB
Pros
- Full PostgreSQL — real SQL, not a proprietary NoSQL store
- Integrated auth, storage, Edge Functions, realtime and pgvector
- Auto-connected by Lovable and first-class in v0/Cursor
Cons
- RLS is critical and easy to forget — tables without it are public
- Common errors around JWT expiry and Edge Function CORS
- Free tier caps you at 2 projects
Our verdict: The top alternative if you want open-source SQL over Google's NoSQL.
Appwrite
Backend-as-a-Service (open-source, self-hostable)Open-source, self-hostable backend in one Docker container.
- Best for
- Developers who want a Firebase-style BaaS they can fully self-host for free.
- Pricing from
- $15/mo per org member (Pro)
- Free tier
- Cloud Free — 75K MAU, 10GB storage
Pros
- Fully open-source and self-hostable with no feature restrictions
- All-in-one: auth, DB, storage, functions and realtime in one container
- Generous 75K MAU free cloud tier
Cons
- Smaller ecosystem than Firebase or Supabase
- Fewer AI-tool integrations
- Free cloud org/project caps
Our verdict: Best if you want to leave Google's cloud and self-host.
Neon
Serverless PostgreSQL database (owned by Databricks)Serverless Postgres with branching and scale-to-zero.
- Best for
- Developers who want serverless Postgres with pay-per-use billing and DB branching.
- Pricing from
- Consumption-based (no monthly minimum)
- Free tier
- Free — 0.5GB + 100 compute-hrs/mo, scale-to-zero, no card
Pros
- Instant database branching per PR or preview
- True scale-to-zero — pay only for what you use
- Predictable per-unit rates and native Vercel pairing
Cons
- Database only — no auth, storage or functions like Firebase
- Consumption billing takes monitoring
- Cold starts on scale-to-zero resume
Our verdict: Best if you only need the database, not a full backend.
AWS Amplify
Backend-as-a-Service (AWS)AWS-native backend with auth, data, storage and hosting.
- Best for
- Teams already on AWS who want a Firebase-style stack on their own cloud.
- Pricing from
- Pay-as-you-go (AWS usage-based)
- Free tier
- AWS Free Tier eligibility
Pros
- Deep AWS integration (Cognito, DynamoDB/AppSync, S3, Lambda)
- Scales into the full AWS ecosystem as you grow
- Strong enterprise governance and compliance options
Cons
- AWS billing is complex and easy to misconfigure
- Steeper learning curve than Firebase
- Overhead is heavy for small projects
Our verdict: Best for teams standardized on AWS who want to stay there.
Nhost
Backend-as-a-Service (open-source, PostgreSQL)Open-source Postgres backend with GraphQL and auth.
- Best for
- Developers wanting an open-source Postgres BaaS with a GraphQL-first workflow.
- Pricing from
- Usage-based paid plans
- Free tier
- Free tier (open-source, self-hostable)
Pros
- Open-source and self-hostable
- Postgres with an instant GraphQL API and built-in auth/storage
- Relational SQL model instead of NoSQL
Cons
- Much smaller community than Firebase
- Fewer prebuilt integrations
- GraphQL-first approach isn't for everyone
Our verdict: Best for open-source Postgres fans who like GraphQL.
PocketBase
Backend-as-a-Service (open-source, self-hosted)Open-source backend in a single portable file.
- Best for
- Solo developers who want a tiny, self-hosted backend with auth and storage.
- Pricing from
- Free (open-source; you pay only for hosting)
- Free tier
- Free — open-source single-file backend
Pros
- One lightweight file with DB, auth, storage and realtime
- Very easy to self-host and deploy
- No usage-based billing surprises
Cons
- SQLite-based, so it scales differently than a cloud NoSQL store
- Smaller feature set than Firebase
- You manage hosting, scaling and backups
Our verdict: Best for lightweight, self-hosted MVPs and side projects.
Convex
Backend-as-a-Service (reactive, TypeScript)Reactive backend with a TypeScript-native data layer.
- Best for
- TypeScript developers who want a reactive, real-time backend with minimal setup.
- Pricing from
- Usage-based paid plans
- Free tier
- Free tier for small projects
Pros
- Reactive queries that update the UI in real time, like Firestore listeners
- TypeScript-first with strong developer experience
- Handles data and server logic together
Cons
- Proprietary data model rather than open Postgres
- Smaller ecosystem than Firebase
- No raw SQL access
Our verdict: Best for TypeScript teams who want real-time data by default.
Compare side by side
| Aspect | Supabase | Appwrite | Neon | AWS Amplify | Nhost | PocketBase | Convex |
|---|---|---|---|---|---|---|---|
| Database model | Postgres | SQL/NoSQL | Postgres | NoSQL/GraphQL | Postgres | SQLite | Reactive |
| Open-source / self-host | Yes | Yes | No | No | Yes | Yes | No |
| Full BaaS suite | Yes | Yes | DB only | Yes | Yes | Yes | Yes |
| Cost predictability | Flat tier | Per-member | Consumption | Complex | Usage-based | Self-host | Usage-based |
| Free tier | 2 projects, 500MB | 75K MAU | 0.5GB + 100 hrs | AWS Free Tier | Yes | Free (self-host) | Yes |
| Best for | Open-source SQL | Self-hosting | Postgres only | AWS teams | GraphQL apps | Lightweight MVPs | TypeScript apps |
Swipe the table sideways to see every column.
Quick pick
Short on time? Jump straight to the right choice for your situation.
You want open-source SQL instead of NoSQL
Full Postgres with auth, storage and functions, plus AI-builder support.
You want to self-host your backend
All-in-one open-source BaaS in one Docker container.
You only need the database
Serverless Postgres with branching and scale-to-zero billing.
You're already standardized on AWS
A Firebase-style stack native to your existing AWS cloud.
You want a tiny self-hosted backend
DB, auth, storage and realtime in a single portable file.
How we compare: Our order reflects the specific things that push teams off Firebase — wanting SQL over NoSQL and worrying about uncapped Blaze billing — balanced against self-hosting, BaaS completeness and ecosystem fit. Prices are each tool's cheapest paid tier as of 2026. No pick is universal: it depends on whether you want SQL, self-hosting or database-only. Prefer to hand off the migration? RapidDev can move and secure your backend.
Frequently asked questions
What is the best alternative to Firebase?
Supabase is the most popular choice — it gives you open-source Postgres (real SQL) with auth, storage, functions and realtime, and avoids Firebase's uncapped billing model. Appwrite is the best fully self-hostable option, and Neon is ideal if you only need a serverless Postgres database.
Is Supabase or Firebase cheaper?
Supabase uses a predictable flat tier (free, then $25/mo Pro), which many find easier to budget than Firebase's Blaze plan, which is pay-as-you-go with no default spending cap. Firebase's free Spark tier is generous for small apps, but costs can climb quickly and quietly at scale without budget alerts set.
Why do people move off Firebase?
Common reasons are wanting relational SQL instead of NoSQL, concern about the Blaze plan having no default spending cap, hitting NoSQL query limitations, and wanting an open-source backend they can self-host. Cold starts and permission-denied security-rules errors also frustrate some teams.
Which Firebase alternative supports real-time data?
Supabase offers Realtime over Postgres, Convex is built around reactive queries that update the UI live, and PocketBase and Appwrite include realtime too. If real-time sync was your main reason for choosing Firebase, Convex and Supabase are the closest in spirit.
Can I self-host a Firebase alternative?
Yes. Supabase, Appwrite, Nhost and PocketBase are all open-source and self-hostable, so you can run your backend on your own infrastructure instead of Google's cloud. Appwrite and PocketBase are especially popular for self-hosting because they bundle everything into a single deployable unit.
Is it hard to migrate from Firebase?
Moving from Firestore's NoSQL model to a SQL backend like Supabase means redesigning your data schema, so it's more than a copy-paste. Auth and storage usually map over more cleanly. If you'd rather not handle the migration yourself, RapidDev can move and secure your backend for you.
Still weighing your options?
- We build on all of these platforms
- Honest advice on which fits your build
- Fixed price, you own 100% of the code
30-min call. No commitment.
