Best Open Source Alternatives to Google Cloud Spanner

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

Curated by open-source.store · Updated November 2026 · 2 alternatives

Google Cloud Spanner

Proprietary SaaS

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Google Cloud Spanner alternatives compared

Open-source alternatives to Google Cloud Spanner, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
TiDB	40,701	Apache-2.0	LinuxDocker	Yes	Nov 2026	Visit
CockroachDB	32,603	BSL-1.0	LinuxDocker	Yes	Oct 2026	Visit

Top open-source Google Cloud Spanner alternatives

TiDB40,701Apache-2.0

TiDB is a distributed MySQL-compatible database that replaces sharded clusters with native horizontal scaling and real-time columnar HTAP analytics.

LinuxDocker

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

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CockroachDB32,603BSL-1.0

CockroachDB replaces proprietary distributed databases like Cloud Spanner with a self-hosted, PostgreSQL-compatible engine built for high availability.

LinuxDocker

vs Google Cloud Spanner: a free, open-source option you fully control, licensed BSL-1.0.

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Best Open Source Alternatives to Google Cloud Spanner

Google Cloud Spanner

Google Cloud Spanner alternatives compared

Top open-source Google Cloud Spanner alternatives

The modern standard for Protobuf workflows

Mentoring for backend developers. Consulting for startups.