Open-source alternatives guide · Updated 2026
Compare the best free and open-source alternatives to Firebase — 15 verified projects with explicit catalog relationships. Inspect licenses, GitHub activity, self-hosting signals, and migration fit before you switch.
Official product reference Firebase↗Only explicit alternative relationships are shown—never inferred competitor claims.
This guide compares 15 verified open-source alternatives to Firebase, including [Supabase](/projects/supabase), PocketBase, Appwrite, and Turso.
Projects appear across AI & Machine Learning, Security & Privacy, and Data & Analytics. 5 options include a self-hosting signal — see the self-hosted catalog. Ranking follows public GitHub stars and recorded momentum—not vendor marketing. Compare projects side by side, then confirm license fit, migration effort, and operational ownership before adopting any option.
Strongest repository-activity signal: Supabase · Jump to ranking · 107.2K stars
Proprietary Google backend platform for apps.
Visit FirebaseCompare capabilities, licensing, and ownership model. Stars help with discovery; they are not a security or product-fit guarantee.
The Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.
The Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications. Review the official repository, license, release
Open Source realtime backend in 1 file
Open Source realtime backend in 1 file Review the official repository, license, release activity, and deployment documentation before production adoption.
Open-source alternative to Firebase
Appwrite® - complete cloud infrastructure for your web, mobile and AI apps. Including Auth, Databases, Storage, Functions, Messaging, Hosting, Realtime and more
Appwrite® - complete cloud infrastructure for your web, mobile and AI apps. Including Auth, Databases, Storage, Functions, Messaging, Hosting, Realtime and more Review the official
Open-source alternative to Firebase
libSQL is a fork of SQLite that is both Open Source, and Open Contributions.
libSQL is a fork of SQLite that is both Open Source, and Open Contributions. Review the official repository, license, release activity, and deployment documentation before producti
Open-source alternative to Firebase
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Headless cloud-native authentication and identity management written in Go. Scales to a billion+ users. Replace Homegrown, Auth0, Okta, Firebase with better UX and DX. Passkeys, Social Sign In, OIDC, Magic Link, Multi-Fa
Headless cloud-native authentication and identity management written in Go. Scales to a billion+ users. Replace Homegrown, Auth0, Okta, Firebase with better UX and DX. Passkeys, So
Open-source alternative to Firebase
The open-source reactive database for app developers
The open-source reactive database for app developers Review the official repository, license, release activity, and deployment documentation before production adoption.
Open-source alternative to Firebase
The infrastructure platform for the intelligence era
The infrastructure platform for the intelligence era Review the official repository, license, release activity, and deployment documentation before production adoption.
Open-source alternative to Firebase
Instant is the best backend for AI-coded apps. You get auth, permissions, storage, presence, and streams — everything you need to ship apps your users will love.
Instant is the best backend for AI-coded apps. You get auth, permissions, storage, presence, and streams — everything you need to ship apps your users will love. Review the offici
Open-source alternative to Firebase
The Open Source Firebase Alternative with GraphQL.
The Open Source Firebase Alternative with GraphQL. Review the official repository, license, release activity, and deployment documentation before production adoption.
Open-source alternative to Firebase
Next-gen, Pusher-compatible, open-source WebSockets server. Simple, fast, and resilient. 📣
Next-gen, Pusher-compatible, open-source WebSockets server. Simple, fast, and resilient. 📣 Review the official repository, license, release activity, and deployment documentation
Open-source alternative to Firebase
Lightweight Firebase/Supabase alternative built to run anywhere — incl. Next.js, React Router, Astro, Cloudflare, Bun, Node, AWS Lambda & more.
Lightweight Firebase/Supabase alternative built to run anywhere — incl. Next.js, React Router, Astro, Cloudflare, Bun, Node, AWS Lambda & more. Review the official repository, lice
Open-source alternative to Firebase
Postgres-native columnar storage extension
Postgres-native columnar storage extension Review the official repository, license, release activity, and deployment documentation before production adoption.
Open-source alternative to Firebase
🚀 Private first self-hosted no code database & BaaS.
🚀 Private first self-hosted no code database & BaaS. Review the official repository, license, release activity, and deployment documentation before production adoption.
Open-source alternative to Firebase
Nitric is a multi-language framework for cloud applications with infrastructure from code.
Nitric is a multi-language framework for cloud applications with infrastructure from code. Review the official repository, license, release activity, and deployment documentation b
Open-source alternative to Firebase
Open-Source SDK for building apps
Open-Source SDK for building apps Review the official repository, license, release activity, and deployment documentation before production adoption.
Map must-have capabilitiesList the workflows in Firebase you cannot drop during migration.
Verify the licenseConfirm it fits your use, distribution, and compliance model. Browse license briefs.
Run a proof of conceptTest real data, integrations, clients, and failure modes. Use Compare for side-by-side checks.
Plan ownershipAssess upgrades, backups, support, and an exit path. Read when self-hosting is worth it.
OpenSourceChoice currently lists 15 projects with an explicit alternative relationship to Firebase. Catalog highlights include [Supabase](/projects/supabase), PocketBase, and Appwrite. Rankings follow public GitHub stars and recorded momentum—not paid placement. Match capabilities and license fit to your workflow before adopting any option.
Most catalogued alternatives publish source under OSI or source-available licenses and are free to inspect. Hosting, commercial support, or cloud model APIs may still cost money. Always read the project license for your use case.
5 options in this list carry a self-hosting signal. Confirm the official install guide, backups, upgrades, and hardening steps before production.
Map must-have Firebase workflows, verify license and compliance fit, run a proof of concept with real data and integrations, then plan ownership for upgrades, backups, support, and an exit path.
Narrow the same alternatives by search, license, tags, or self-hosting signals when you need a tighter shortlist.
United StatesApache-2.0The Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.
AI & Machine LearningOpen-source projects grouped in this category for discovery and comparison.#
TypeScriptProjects tagged with this topic in the verified catalog.
Github ActionsProjects tagged with this topic in the verified catalog.
JavaScriptProjects tagged with this topic in the verified catalog.AI-nativeThis project includes AI-native capability signals in the catalog metadata.
FirebaseProprietary Google backend platform for apps.Open Source realtime backend in 1 file
Security & PrivacyOpen-source projects grouped in this category for discovery and comparison.#
GoProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.FirebaseProprietary Google backend platform for apps.Appwrite® - complete cloud infrastructure for your web, mobile and AI apps. Including Auth, Databases, Storage, Functions, Messaging, Hosting, Realtime and more
AI & Machine LearningOpen-source projects grouped in this category for discovery and comparison.#TypeScriptProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.
Self-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.AI-nativeThis project includes AI-native capability signals in the catalog metadata.FirebaseProprietary Google backend platform for apps.libSQL is a fork of SQLite that is both Open Source, and Open Contributions.
Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.#
CProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.FirebaseProprietary Google backend platform for apps.Headless cloud-native authentication and identity management written in Go. Scales to a billion+ users. Replace Homegrown, Auth0, Okta, Firebase with better UX and DX. Passkeys, Social Sign In, OIDC, Magic Link, Multi-Fa
Security & PrivacyOpen-source projects grouped in this category for discovery and comparison.#GoProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.Self-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.FirebaseProprietary Google backend platform for apps.The open-source reactive database for app developers
Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.#TypeScriptProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.FirebaseProprietary Google backend platform for apps.The infrastructure platform for the intelligence era
Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.#GoProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.FirebaseProprietary Google backend platform for apps.Instant is the best backend for AI-coded apps. You get auth, permissions, storage, presence, and streams — everything you need to ship apps your users will love.
AI & Machine LearningOpen-source projects grouped in this category for discovery and comparison.#TypeScriptProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.AI-nativeThis project includes AI-native capability signals in the catalog metadata.FirebaseProprietary Google backend platform for apps.The Open Source Firebase Alternative with GraphQL.
Security & PrivacyOpen-source projects grouped in this category for discovery and comparison.#GoProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.FirebaseProprietary Google backend platform for apps.Next-gen, Pusher-compatible, open-source WebSockets server. Simple, fast, and resilient. 📣
Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.#TypeScriptProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.Self-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.FirebaseProprietary Google backend platform for apps.Lightweight Firebase/Supabase alternative built to run anywhere — incl. Next.js, React Router, Astro, Cloudflare, Bun, Node, AWS Lambda & more.
InfrastructureOpen-source projects grouped in this category for discovery and comparison.#TypeScriptProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.JavaScriptProjects tagged with this topic in the verified catalog.FirebaseProprietary Google backend platform for apps.Postgres-native columnar storage extension
Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.#CProjects tagged with this topic in the verified catalog.Github ActionsProjects tagged with this topic in the verified catalog.
BashProjects tagged with this topic in the verified catalog.Self-hostedThis project carries a self-hosting or local-deployment signal. Verify the official install guide before production use.FirebaseProprietary Google backend platform for apps.
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