We compared Supabase, Firebase, Appwrite, and AWS Amplify to find the best BaaS for React developers. Supabase wins for SQL lovers, Firebase for NoSQL speed, Appwrite for self-hosting, and Amplify for AWS-native teams.
building a react app these days means deciding how much backend you want to own. a backend-as-a-service (baas) handles auth, databases, file storage, and real-time features so you can focus on the frontend. but the choice often comes down to one big fork in the road: sql vs. nosql.
here are the four best baas platforms for react, ranked by what they do best.
supabase is an open-source firebase alternative built on postgresql. if you love relational databases, this is your tool. it gives you a full postgres database, row-level security, real-time subscriptions, and built-in auth — all accessible from a react client.1
why it wins: postgres means you get joins, foreign keys, and migrations out of the box. for react apps that need complex relational queries (think dashboards, multi-tenant saas, or e-commerce), supabase is the obvious pick. the real-time layer uses postgres replication, so changes in the db automatically push to your react components.
best for: teams that want sql, open-source transparency, and the ability to self-host if needed.
firebase, powered by google, is the most mature baas on the market. its core database, firestore, is a nosql document store that syncs effortlessly with react via the firebase sdk.2
why it wins: speed of prototyping. you can go from zero to a working react app with auth and a database in minutes. firestore's real-time listeners are first-class, and the ecosystem includes cloud functions, hosting, and analytics. the trade-off? nosql means you'll denormalize data and handle consistency yourself.
best for: rapid prototyping, mobile-first apps, and teams comfortable with document databases.
appwrite is an open-source baas that you can self-host on your own infrastructure. it provides rest apis for auth, databases (both sql and nosql options), storage, and serverless functions.3
why it wins: full control. if your project has compliance requirements (gdpr, hipaa) or you simply don't want your data on someone else's cloud, appwrite gives you the same developer experience as firebase but on your own servers. it also supports multiple database types, giving you flexibility.
best for: privacy-conscious teams, enterprise deployments, and anyone who needs to avoid vendor lock-in.
aws amplify is a set of tools and libraries that connect your react app to aws services like cognito (auth), appsync (graphql), and dynamodb (nosql).4
why it wins: if your team is already on aws, amplify is the natural choice. it provides a cli for scaffolding backend resources, a hosting service with ci/cd, and a graphql layer that works well with react. the learning curve is steeper than firebase, but the scalability ceiling is essentially infinite.
best for: teams already using aws, or apps that need to grow into complex cloud architectures.
| platform | database type | hosting | pricing model | open source |
|---|---|---|---|---|
| supabase | sql (postgresql) | cloud + self-host | usage-based free tier, then per-project | yes |
| firebase | nosql (firestore) | cloud only | usage-based free tier, then pay-as-you-go | no |
| appwrite | sql + nosql | self-host + cloud | free tier, then per-user pricing | yes |
| aws amplify | nosql (dynamodb) + graphql | cloud only | pay-as-you-go (aws pricing) | no |
this is the real question behind every baas decision.
choose sql (supabase, appwrite) when your data has relationships — users have orders, orders have items, items have categories. react state management benefits from normalized data because you can fetch exactly what you need with a single query. postgres also gives you migrations, which means your schema evolves safely as your app grows.
choose nosql (firebase, amplify) when your data is mostly read-heavy and document-shaped — user profiles, blog posts, chat messages. nosql is faster to iterate on because you don't define schemas upfront. but you'll end up duplicating data across documents, and complex queries require manual handling in your react code.
our take: if you're building something that will live longer than a prototype, start with sql. supabase makes it almost as easy as firebase to get started, but you won't hit a wall six months in when you need to join three tables.
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