Open-source alternatives guide · Updated 2026
Compare the best free and open-source alternatives to Supabase — 19 verified projects with explicit catalog relationships. Inspect licenses, GitHub activity, self-hosting signals, and migration fit before you switch.
Official product reference Supabase↗Only explicit alternative relationships are shown—never inferred competitor claims.
This guide compares 19 verified open-source alternatives to Supabase, including PocketBase, Appwrite, Milvus, and Qdrant.
Projects appear across Security & Privacy, AI & Machine Learning, and Data & Analytics. 8 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.
Builders evaluating Firebase/Supabase-style backends they can self-host or assemble from open components.
Migration tip: Separate database, auth, storage, and realtime concerns. Many “alternatives” are combinations of Postgres, Keycloak/Auth.js, MinIO, and API layers—not a single twin product.
Strongest repository-activity signal: PocketBase · Jump to ranking · 59.7K stars
Supabase is a Postgres-centric backend platform with auth, storage, and realtime APIs. People compare alternatives when they want different BaaS trade-offs, stricter self-hosting, or a thinner Postgres-plus-tools stack.
Visit SupabaseCompare capabilities, licensing, and ownership model. Stars help with discovery; they are not a security or product-fit guarantee.
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 Supabase
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 Supabase
Milvus is a high-performance, cloud-native vector database built for scalable vector ANN search
Milvus is a high-performance, cloud-native vector database built for scalable vector ANN search Review the official repository, license, release activity, and deployment documentat
Qdrant - High-performance, massive-scale Vector Database and Vector Search Engine for the next generation of AI. Also available in the cloud https://cloud.qdrant.io/
Qdrant - High-performance, massive-scale Vector Database and Vector Search Engine for the next generation of AI. Also available in the cloud https://cloud.qdrant.io/ Review the off
Open-source alternative to Supabase
Search infrastructure for AI
Search infrastructure for AI Review the official repository, license, release activity, and deployment documentation before production adoption.
Open-source alternative to Supabase
Neon: Serverless Postgres. We separated storage and compute to offer autoscaling, code-like database branching, and scale to zero.
Neon: Serverless Postgres. We separated storage and compute to offer autoscaling, code-like database branching, and scale to zero. Review the official repository, license, release
Open-source alternative to Supabase
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 Supabase
Weaviate is an open-source vector database that stores both objects and vectors, allowing for the combination of vector search with structured filtering with the fault tolerance and scalability of a cloud-native database
Weaviate is an open-source vector database that stores both objects and vectors, allowing for the combination of vector search with structured filtering with the fault tolerance an
Open-source alternative to Supabase
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 Supabase
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 Supabase
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 Supabase
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 Supabase
HelixDB is an OLTP graph-vector database built in Rust on Object Storage.
HelixDB is an OLTP graph-vector database built in Rust on Object Storage. Review the official repository, license, release activity, and deployment documentation before production
Open-source alternative to Supabase
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 Supabase
A cloud native embedded storage engine built on object storage.
A cloud native embedded storage engine built on object storage. Review the official repository, license, release activity, and deployment documentation before production adoption.
Open-source alternative to Supabase
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 Supabase
🚀 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 Supabase
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 Supabase
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 Supabase 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.
Much of the Supabase stack is open source, with hosted commercial offerings. Verify which components you deploy and their licenses for your use case.
Self-hosted Supabase, Appwrite, PocketBase, or a custom Postgres stack can fit depending on auth/storage needs and ops maturity.
Narrow the same alternatives by search, license, tags, or self-hosting signals when you need a tighter shortlist.
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.
SupabaseOpen-core backend platform often compared with Firebase.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.SupabaseOpen-core backend platform often compared with Firebase.
United StatesApache-2.0Milvus is a high-performance, cloud-native vector database built for scalable vector ANN search
AI & Machine LearningOpen-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.AI-nativeThis project includes AI-native capability signals in the catalog metadata.SupabaseOpen-core backend platform often compared with Firebase.Qdrant - High-performance, massive-scale Vector Database and Vector Search Engine for the next generation of AI. Also available in the cloud https://cloud.qdrant.io/
AI & Machine LearningOpen-source projects grouped in this category for discovery and comparison.#
RustProjects 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.SupabaseOpen-core backend platform often compared with Firebase.Search infrastructure for AI
AI & Machine LearningOpen-source projects grouped in this category for discovery and comparison.#RustProjects 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.SupabaseOpen-core backend platform often compared with Firebase.Neon: Serverless Postgres. We separated storage and compute to offer autoscaling, code-like database branching, and scale to zero.
Data & AnalyticsOpen-source projects grouped in this category for discovery and comparison.#RustProjects 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.SupabaseOpen-core backend platform often compared with Firebase.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.SupabaseOpen-core backend platform often compared with Firebase.
NetherlandsBSD-3-ClauseWeaviate is an open-source vector database that stores both objects and vectors, allowing for the combination of vector search with structured filtering with the fault tolerance and scalability of a cloud-native database
AI & Machine LearningOpen-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.AI-nativeThis project includes AI-native capability signals in the catalog metadata.SupabaseOpen-core backend platform often compared with Firebase.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.SupabaseOpen-core backend platform often compared with Firebase.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.SupabaseOpen-core backend platform often compared with 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.
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.SupabaseOpen-core backend platform often compared with Firebase.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.SupabaseOpen-core backend platform often compared with Firebase.
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