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OpenAlternative

Open Source Fauna Alternatives

A curated collection of the 6 best open source alternatives to Fauna.

The best open source alternative to Fauna is Supabase. If that does not suit you, we have compiled a ranked list of other open source Fauna alternatives to help you find a suitable replacement.

Fauna alternatives are mainly Backend-as-a-Service (BaaS). Browse these if you want a narrower list of alternatives or are looking for a specific functionality of Fauna.

Written by OpenAlternative Last updated: June 2, 2026
#1

Supabase

Provides a full backend stack built on Postgres: authentication, auto-generated APIs, edge functions, realtime subscriptions, file storage, and vector

Provides a full backend stack built on Postgres: authentication, auto-gene...

#2

TiDB

Distributed SQL database combining OLTP and OLAP capabilities, offering horizontal scalability, high availability, and real-time analytics.

Distributed SQL database combining OLTP and OLAP capabilities, offering ho...

#3

Convex

Open-source reactive database that keeps your web and mobile apps in sync. Write everything in TypeScript with built-in auth, cron jobs, and AI integr

Open-source reactive database that keeps your web and mobile apps in sync....

#4

Instant

Instant is a database solution for building real-time and offline-enabled applications, simplifying the development of collaborative products.

Instant is a database solution for building real-time and offline-enabled ...

#5

OceanBase

Scalable, high-availability database system supporting OLTP, OLAP, and hybrid transactional/analytical processing workloads.

Scalable, high-availability database system supporting OLTP, OLAP, and hyb...

#6

FerretDB

A database proxy that enables MongoDB compatibility with PostgreSQL backend, allowing seamless use of MongoDB tools and drivers while avoiding vendor

A database proxy that enables MongoDB compatibility with PostgreSQL backen...