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There is no single best Firebase alternative for every web app. Start with Supabase if your app depends on SQL and relational data, Appwrite if you want a broad backend API with a self-hosting option, Convex if reactive TypeScript workflows are central, or AWS Amplify if your team already builds on AWS. Before choosing, compare the data model, authorization, portability, billing, and operating work against your actual application.
Firebase alternatives at a glance
These platforms overlap, but they do not offer interchangeable data models or operating models. The table is a shortlist by use case, not a performance ranking. Product details below reflect the vendors’ documentation and, where noted, Appwrite’s comparison updated June 29, 2026.
| Option | Best fit | Main trade-off |
|---|---|---|
| Supabase | Applications that benefit from PostgreSQL, SQL queries, and relational modeling alongside authentication, storage, realtime features, and edge functions. | Self-hosting is available, but shifts infrastructure operations to your team; Appwrite’s comparison also notes that some cloud and self-hosted features differ. Source: Supabase and Appwrite official documentation. |
| Appwrite | Teams looking for an API-driven backend with services including authentication, databases, storage, functions, messaging, realtime, and sites, plus a self-hosting option. | Appwrite describes its third-party ecosystem as younger than Firebase’s in some areas. That is Appwrite’s own assessment, not an independent ecosystem audit. Source: Appwrite’s comparison, updated June 29, 2026. |
| AWS Amplify | Teams already invested in AWS that want a web development workflow connected to AWS services. | AWS service breadth can bring added IAM and cross-service complexity. Appwrite’s comparison also flags a steeper learning curve and difficulty forecasting complex bills; those are vendor-authored assessments. Source: Appwrite’s comparison, updated June 29, 2026. |
| Convex | TypeScript teams that prioritize reactive data and automatic synchronization. | Appwrite’s comparison characterizes Convex as a reactive document database with TypeScript functions and a smaller third-party ecosystem. Check Convex’s current official documentation to confirm whether those constraints fit your project. Source: Appwrite’s comparison, updated June 29, 2026. |
| PocketBase | Lean projects for which a lightweight, self-hosted backend is an appropriate scope. | Self-hosting means your team owns deployment, backups, security, and scaling. The available comparison does not establish a full official feature-by-feature match with Firebase, so evaluate it as a narrower option rather than assuming it replaces every managed Firebase service. Source: Appwrite’s 2026 comparison. |
| Firebase | Projects that value its managed Google stack and mature mobile ecosystem and are comfortable with its data model and platform dependence. | Appwrite’s comparison describes Firebase as lacking first-party self-hosting for its server stack and having greater lock-in around its data model and pricing. These are Appwrite’s characterizations, not an independent audit. Source: Appwrite’s comparison, updated June 29, 2026. |
How to choose the right backend
Start with the data model and queries
Write down the entities your app stores and how they relate. If users, orders, subscriptions, and permissions need to be joined and queried relationally, SQL and PostgreSQL make Supabase a natural candidate. If your data fits a document-oriented or reactive workflow, assess whether that model maps cleanly to your reads, writes, and consistency needs before committing.
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Compare authorization, not just sign-in
Authentication answers who a user is; authorization determines which records and operations that user may access. Model at least one real access rule—such as a user reading only their own records—and determine where it is enforced.
Supabase documents Storage access policies tied to PostgreSQL Row Level Security. Appwrite documents permission-aware database APIs. These approaches are not direct equivalents, and policy logic should not be assumed to transfer unchanged in a migration. Test access from both permitted and denied user contexts.
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Decide who will operate the system
Supabase and Appwrite document self-hosting options. That can give a team more control over deployment, but it also makes the team responsible for infrastructure decisions and ongoing operations. Include backups, upgrades, security response, capacity planning, and monitoring in the comparison—not only hosting charges.
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Match realtime and functions to actual workflows
List the events your application needs to handle: for example, updating a live view, processing a background task, or reacting to a database change. Then compare the trigger, runtime, delivery semantics, and failure handling each finalist supports. Supabase documents realtime features and TypeScript Edge Functions; Appwrite documents functions and realtime; Appwrite’s comparison describes Firebase integrations with Google Cloud Functions triggers and Convex’s reactive synchronization model.
These product descriptions do not establish which platform is faster or more reliable under your workload. A feature labeled “realtime” is not enough to prove it satisfies a particular latency, ordering, or delivery guarantee.
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Evaluate billing and ecosystem fit
Compare the shape of the bill, not just a headline plan: usage-based charges, quotas, overages, dedicated or fixed compute, and the work needed to operate the service can affect total cost. No common workload bill or live price comparison is established here. Check current vendor pricing and limits for your expected usage before making a decision.
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Also account for your team’s existing skills and dependencies. AWS Amplify is most relevant to AWS-aligned teams; Supabase and Appwrite document integrations and quickstarts for web frameworks. Supabase’s official documentation lists quickstarts for React, Next.js, Astro, Vue, Nuxt, SvelteKit, and others. Confirm that your required framework, deployment path, and third-party integrations are supported for the specific project.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Shortlist platforms with a focused proof of concept
Choose two finalists based on your data model and deployment constraints, then implement the same small but representative workflow on each. Appwrite’s 2026 platform guide also recommends prototyping authentication, a read/write path, and a background job before committing to a data model.
- Build one sign-in flow. Test the account creation and sign-in method your product actually needs, including the relevant error and recovery path.
- Implement one representative read and write. Use a real-shaped record and query rather than a generic demo. Check whether the data model makes common application operations straightforward.
- Add one authorization rule. Verify that an allowed user can perform the operation and that a user without permission cannot.
- Run one background or event-driven task. Check how it is triggered, what runtime it uses, and how failures or retries are handled.
- Review deployment and cost assumptions. For a hosted option, estimate your workload against current quotas and billing rules. For self-hosting, account for the infrastructure and operational tasks your team would own.
Use the prototype to answer concrete questions: Can the team implement its data model without awkward workarounds? Can it express and test authorization clearly? Does the chosen deployment model fit its operational capacity? Do required integrations and workflows work as expected? No independent named statistic or controlled cross-platform performance benchmark establishes a universal winner, so make the choice against those project-specific results.
Plan a Firebase migration as a redesign
Moving an existing application is more than replacing service calls. Firebase’s data model, access rules, and integrations may not map one-to-one to the destination platform. Inventory the data and authorization behavior first, then test representative records and user flows in the target system before planning a full cutover.
Appwrite provides Firebase migration guidance, and Supabase documents migration resources for Firebase Auth, Storage, and Firestore. Verify that the documented path covers your specific authentication setup, data, and application dependencies; the existence of migration guidance does not establish that every app can be transferred without additional work.
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