Best Open Source Alternatives to SingleStore

Compare the best free and open-source alternatives to SingleStore — 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

SingleStore

Proprietary SaaS

PricingPaid

Platformsweb

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SingleStore alternatives compared

Open-source alternatives to SingleStore, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Milvus	46,574	Apache-2.0	LinuxDocker	Yes	Nov 2026	Visit
Pgvector	23,568	MIT	LinuxDocker	Yes	Oct 2026	Visit

Top open-source SingleStore alternatives

Milvus46,574Apache-2.0

Milvus is an open-source distributed vector database replacing Pinecone with GPU-accelerated indexing, hybrid search, and decoupled cloud-native scaling.

LinuxDocker

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

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Pgvector23,568MIT

Pgvector brings vector similarity search and HNSW indexing to PostgreSQL, letting developers query embeddings directly alongside relational data.

LinuxDocker

vs SingleStore: a free, open-source option you fully control, licensed MIT.

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Best Open Source Alternatives to SingleStore

SingleStore

SingleStore alternatives compared

Top open-source SingleStore alternatives

The modern standard for Protobuf workflows

Mentoring for backend developers. Consulting for startups.