9 Best Backend as a Service Platforms in 2026

Every BaaS demo builds the same app: a to-do list with login. It works, because a todo list only needs a database and an auth screen. Then your actual project ships, and it needs background jobs, transactional email, file storage with permissions, push notifications, and a billing integration. That is when you learn what your platform includes and what it outsources to your credit card and five more vendors.

This is the state of backend as a service in 2026: nine platforms worth evaluating, compared on databases, licenses, and what the paid tier costs.

TL;DR: which BaaS platform should you pick?

What a BaaS platform has to include in 2026

The category has drifted apart, and the word "backend" now covers two different products.

Database-first platforms hand you a managed database with generated APIs and build outward from there. Supabase is the obvious example, and Neon, which we covered in the Supabase alternatives comparison, is the purest one. Full application platforms start from the other end: they assume the app needs login, background work, files, mail, and maybe payments, and treat the database as one service among several.

Auth has stopped being a differentiator. Every platform in this list ships with email login, OAuth, and some form of MFA. The differences that remain are enterprise features like SAML and SCIM, and that is where the pricing gets interesting. Firebase gates SAML behind Identity Platform per-user billing. Supabase includes 50 SAML users on Pro. Appwrite's SSO tier is not listed on its pricing page at all.

Past auth, the differences open up. Push notifications, transactional email, background jobs, storage policies, and workflow automation are the items that decide whether you finish the quarter with one vendor or six. That list explains most of the pricing differences below.

1. Firebase: the incumbent with the widest free tier

Firebase still sets the reference for what a free tier can carry: 50,000 monthly active users for authentication, 1 GiB of Firestore storage, 2 million Cloud Function invocations every month. Crashlytics, Cloud Messaging, Remote Config, and Analytics cost nothing and have no equivalent anywhere else in this list.

The model has catches that surface in month two or three. Firestore bills per document read, so one list screen that loads items one by one can outcost your compute. SAML and OIDC sign-in route through Identity Platform, which bills per user after the first 50. And the moment you want Cloud Functions, App Hosting, or the SQL Connect Postgres option, the project needs a Cloud Billing account on the Blaze plan.

Strengths: the strongest mobile SDKs and tooling in the category; a free operations suite covering crash reporting, push, and analytics; SQL Connect adds a Postgres option for Firebase apps that grew into relational data.

Weaknesses: costs spread across per-read billing and several Google Cloud consoles; the document model makes a later move to SQL expensive; SAML priced per user through Identity Platform.

Pricing: Spark plan free. Blaze is pay as you go at Google Cloud rates, with no monthly floor.

Best for: mobile-first teams and shops already inside the Google ecosystem.

2. Supabase: Postgres with an open exit

Supabase won its 114,000 GitHub stars by refusing to hide the database. Every project is a real Postgres instance with row level security, and psql, pg_dump, or any ORM connects to it, so the exit path is ordinary database work. Auth, storage, edge functions, and realtime arrive on top, and SAML SSO is included from the $25 Pro plan with 50 users before per-MAU pricing.

Two frictions from our Supabase alternatives piece are still true. The free tier pauses projects after a week of inactivity, which bites internal tools and demos. And the platform ends, politely, at the database perimeter: background workflows, transactional mail, and payments come from somewhere else.

Strengths: standard Postgres with generated REST and GraphQL APIs; Apache-2.0 with full Docker self-hosting; the largest community in the category, so every question has a thread somewhere.

Weaknesses: compute is billed per project on top of the plan price; free projects sleep; no first-party push notifications, mail delivery, or payment integration.

Pricing: Free with 500 MB database and 2 active projects. Pro from $25/mo plus per-project compute from $10/mo.

Best for: teams that want the Postgres schema to be the contract and might need to leave with it.

3. Appwrite: the self-host everything option

Appwrite reads closest to a full platform in the open source column: databases, storage, functions, realtime, sites, and messaging across email, SMS, and push. All of it sits under the BSD-3-Clause license, with 57,800 stars. Self-hosting is one Docker command, and the cloud has a permanent free plan with two projects.

Two things to check before committing. The default database is Appwrite's own TablesDB, so SQL portability means paying for the managed PostgreSQL or MySQL option, from $10 per month per database. And when a free project hits its quotas, the project freezes and the console goes read-only until the cycle resets.

Strengths: permissive license with one-command self-hosting; the widest first-party feature set in open source BaaS, messaging included; hosted MCP server so coding agents operate on a live project without API keys.

Weaknesses: TablesDB is not Postgres, and the SQL options cost extra; smaller community than Supabase; the Pro plan price is not published on the pricing page, which usually means a conversation.

Pricing: Free on cloud and self-host. Dedicated SQL databases from $10/mo. Pro pricing on request.

Best for: teams whose legal department has a folder for BSD-3 and whose ops team has a Docker host.

4. AWS Amplify: when the company already runs on AWS

Amplify wraps Cognito, DynamoDB, Lambda, AppSync, and S3 into one product with git-push deploys and preview URLs. The Gen 2 programming model is CDK-based, so the backend you define is real infrastructure code that engineers can review, and team seats are free. When the app outgrows Amplify, nothing needs re-architecting, because underneath it was AWS all along.

Pricing is the weakness, and it arrives as several invoices. Build minutes at $0.01 each, hosting egress at $0.15 per GB, and every backing service billed at its own AWS rate. New accounts get up to $200 in credits across a 6-month free plan; after that the free tier lasts 12 months and expires. Cognito's developer experience remains the tax everyone complains about.

Strengths: more scaling headroom than the rest of the list combined; infrastructure-as-code backend definitions; free collaboration seats.

Weaknesses: cost forecasting means reading five AWS pricing pages; Cognito auth is workable but widely disliked; the free tier expires.

Pricing: Usage-based. Builds $0.01/min, hosting $0.15/GB transferred, backing services at AWS rates. AWS's own worked example lands near $8/mo for a small app.

Best for: teams whose security review, procurement, and tooling already assume AWS.

5. Parse Platform: the veteran that refuses to die

Parse outlived Facebook shutting it down in 2016 by becoming the most portable self-hosted backend there is. Parse Server is Apache-2.0 Node.js over MongoDB or Postgres, with auto-generated REST and GraphQL, Cloud Code for server logic, Live Query for realtime, and push through APNs and FCM. The SDK list is still unmatched: web, iOS, Android, Flutter, Unity, and more.

Parse is software you run yourself, and that is the trade. There is no official cloud; you run it, back it up, and scale it, or you pick a host like Back4App below. Auth covers users, sessions, and OAuth with lockout policies, but SAML and MFA are yours to build.

Strengths: 21,400 stars of battle-tested code; SDK coverage no younger platform matches; your choice of MongoDB or Postgres underneath.

Weaknesses: you own the operations; no SAML or MFA out of the box; a 2016-era architecture that shows its age in the developer experience.

Pricing: Free as software. Infrastructure, hosting, and the ops engineer are separate line items.

Best for: long-lived apps already on Parse, and teams that want the backend to be plain code they control.

6. Back4App: hosted Parse with a predictable bill

Back4App runs managed Parse Server, so you keep the SDKs, Cloud Code jobs, and auto-GraphQL, and someone else carries the pager. The free tier allows 25K requests and 250 MB of storage across up to 5 projects. The MVP tier at $15 per app per month (annual) includes 500K requests, 50 GB of file storage, and daily backups.

Read the limits before signing. Free and MVP run on shared infrastructure with a 20 MB upload cap and US-only regions, and container-based plans take over from there. SSO availability is not documented clearly enough to state here, which for an enterprise feature is itself information.

Strengths: pricing you can forecast per app; the Parse feature set without the operations; daily backups from the first paid tier.

Weaknesses: shared infrastructure and one region at the low end; 20 MB upload cap; SSO documentation is thin.

Pricing: Free for 25K requests. MVP from $15/app/mo annual. Container plans scale from there.

Best for: Parse refugees who want the codebase kept but the pager handed off.

7. Nhost: instant GraphQL over Postgres

Nhost packages Postgres, Hasura's GraphQL engine, auth, storage with image transforms, and serverless functions into one MIT-licensed stack. Point it at a schema and Hasura generates the API, with realtime subscriptions, event triggers, and role-based authorization enforced at the engine. Auth includes 2FA and WebAuthn on every tier, free included, and the AI toolkit ships pgvector.

The constraints are the small print. The free Starter plan holds one project and pauses it after a week of inactivity. It caps functions at ten, with 10-second executions, and allows one member per workspace. Pro starts at $25 per month with $15 of compute credits, and Supabase's compute arithmetic applies from there.

Strengths: the fastest schema-to-production-GraphQL path in the list; engine-level authorization your resolvers cannot forget to check; 2FA and WebAuthn included from the free tier.

Weaknesses: a small ecosystem, 9,400 stars, so fewer answers to copy; GraphQL-only APIs will not suit REST shops; compute billed on top of the plan.

Pricing: Starter free, 1 project and 1 GB. Pro from $25/mo plus compute. Self-hosting is possible from the open source stack.

Best for: GraphQL-first teams that consider Hasura a feature.

8. PocketBase: an entire backend as one file

PocketBase is a single Go binary with SQLite, realtime subscriptions, auth including OAuth2 and MFA, file storage, and an admin dashboard. You drop it on a small VPS, run it, and you have a backend; the MIT license permits anything, including resale. In October 2026 the project moved off GitHub to its founder's own host, and the old repo is now a read-only archive, so pull your binary from the new home.

Scale is the limit, and the FAQ states it plainly: one server, SQLite's write concurrency ceiling, no clustering story. The pre-1.0 versioning means breaking changes between minors are documented policy. For an internal tool, a client demo, or an indie product, none of that matters, and nothing else in this list costs less than free.

Strengths: the smallest operational surface in the category; MIT with zero restrictions; the admin UI lets a non-engineer manage collections.

Weaknesses: single node, no clustering, SQLite write limits; pre-1.0 breaking changes; the repo move is fresh enough that its long-term home is worth watching.

Pricing: Free, forever, wherever you run it.

Best for: indie products, internal tools, and prototypes that might outlive the platform around them.

9. Blocks: the database plus the business around it

Blocks is the entry from SELISE, and it takes the full-platform bet further than anyone else here. The Data Gateway generates per-item CRUD and GraphQL over typed schemas you define. Backing it is a managed database, or an external one you map in, and field validation and access policies are enforced at the gateway. Around it sit the services a business application otherwise assembles from vendors. IAM covers hosted login, MFA, organizations, and SSO. Logic is a visual workflow builder with webhook triggers and an AI agent node. Utilities handles transactional mail and payments, and Release does git-based deployment with SAST and SCA scanning built into every build. One CLI drives all of it:

npm install -g @seliseblocks/cli-os@latest
blocks data schema list --json

Every one of those services is a separate MIT-licensed repository, so the source is inspectable and the exit path exists, even though a packaged self-hosting guide is still on the roadmap. The free tier includes up to 10 projects with auth, email, logs, and deployment automation. Where the platform is thin is the stuff a 114,000-star community provides: tutorials, Stack Overflow answers, and the person who hit your exact bug last week.

Strengths: one platform for data, identity, workflows, mail, payments, and deployment; MIT-licensed services; access control enforced before application code runs.

Weaknesses: the smallest community in the list; self-hosting means working from the repositories today; enterprise support comes through a sales conversation.

Pricing: Free tier with 10 projects. Paid plans from the pricing page.

Best for: teams building business applications who would otherwise glue together five vendors. The Vercel vs Blocks OS comparison covers the platform bet in detail.

Comparison table

Which one should you pick

Start with the shape of the app, because the feature lists blur together fast.

If the app is mobile-first, Firebase is the shortlist and everything else is competing on price. If the schema is the product and you want it in standard Postgres, Supabase, with Nhost for GraphQL shops. If the platform has to run inside your own perimeter, Appwrite and Parse are the open source answers, and Back4App is the same stack managed. If procurement already loves AWS, fighting it costs more than Amplify will.

And if the app is a business application, with roles, workflows, invoices, and an audit conversation in its future, count the vendors in your planned architecture before picking anything. Five integrations means five invoices, five failure modes, and five support threads. That is the specific problem Blocks was built for, and the n8n alternatives comparison shows the same consolidation pattern in automation.

FAQ

What is the cheapest BaaS platform in 2026? PocketBase, by a distance. The MIT-licensed binary runs anywhere and bills nobody. On managed clouds, Firebase's free quotas and Supabase's free tier carry the most, with the pause-after-a-week caveat on Supabase's free projects.

Which BaaS platform lets me keep my Postgres database? Supabase and Nhost. Both put you on standard Postgres with normal connection strings, so pg_dump and any ORM work. Appwrite offers managed Postgres as a paid dedicated option, and Parse runs on Postgres if you host it yourself.

Can I self-host a BaaS platform? Supabase (Apache-2.0), Appwrite (BSD-3-Clause), Parse (Apache-2.0), Nhost (MIT), and PocketBase (MIT) all ship self-hosting. Firebase and Amplify are cloud-only. Blocks publishes its services as MIT repositories.

Is Firebase still free in 2026? The Spark plan is free, with generous quotas: 50K auth users, 1 GiB Firestore, 2M function invocations monthly. In practice, most apps need the Blaze billing account quickly, because functions, App Hosting, and SQL Connect all require it.

Pricing and plan limits verified from each vendor's own pricing page on November 11, 2026. Star counts and repo states drift; the PocketBase repo move was verified against the GitHub archive directly.