Best Open Source Alternatives to Fauna

Compare the best free and open-source alternatives to Fauna — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

Curated by open-source.store · Updated November 2026 · 3 alternatives

Fauna

Proprietary SaaS

Fauna alternatives compared

Open-source alternatives to Fauna, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Convex	12,773	—	DockerLinux	Yes	Nov 2026	Visit
Instant	10,563	Apache-2.0	Web	No	Oct 2026	Visit
OceanBase	10,365	Apache-2.0	Web	No	Oct 2026	Visit

Top open-source Fauna alternatives

Convex12,773

Convex is an open-source reactive database and backend runtime replacing Supabase with end-to-end TypeScript functions and live WebSocket queries.

DockerLinux

vs Fauna: a free, open-source option you fully control.

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EasyP

Promoted

The modern standard for Protobuf workflows

Lint, codegen, breaking-change checks and dependency management in one Git-native CLI. Open source, no registry lock-in.

lintgeneratebreakingeasyp.lock

go · ts · java generated

$ easyp breaking

backward compatible

Instant10,563Apache-2.0

Instant is an open-source Firebase alternative delivering real-time relational queries, optimistic UI updates, and data control on self-hosted PostgreSQL.

Web

vs Fauna: a free, open-source option you fully control, licensed Apache-2.0.

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OceanBase10,365Apache-2.0

OceanBase is an open-source distributed HTAP database with MySQL compatibility, Paxos-based horizontal scaling, and integrated real-time analytics.

Web

vs Fauna: a free, open-source option you fully control, licensed Apache-2.0.

Visit Details