Best Open-Source Alternatives to Google Cloud Spanner (2026) | open-source.store

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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 August 2026 · 3 alternatives

Google Cloud Spanner

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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
ClickHouse	48,987	Apache-2.0	LinuxDocker	Yes	Aug 2026	Visit
TiDB	40,372	Apache-2.0	LinuxDocker	Yes	Aug 2026	Visit
CockroachDB	32,342	BSL-1.0	LinuxDocker	Yes	Jul 2026	Visit