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Milvus Alternatives in 2026

The best 8 open-source Milvus alternatives in 2026, ranked by GitHub stars. Find free, self-hosted replacements for Milvus.

8 Alternatives
100% Open Source
Free To Self-Host

What are the best Milvus alternatives in 2026?

The best open-source Milvus alternatives in 2026 are Qdrant, Chroma, pgvector, LanceDB, Faiss. These tools cover the same use cases as Milvus — open-source vector database for scalable similarity search — with the advantage of being open-source, free to self-host, and backed by active communities. Top picks are ranked by GitHub stars and community adoption, so you can find a drop-in replacement that fits your workflow.

#1
Qdrant ★ 34k+ Top Pick

High-performance vector similarity search engine

vector-db embeddings rust open-sourceApache-2.0
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#2
Chroma ★ 29k+ Top Pick

Open-source AI-native vector database

vector-db embeddings rag open-source
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#3
pgvector ★ 23k+ Top Pick

Open-source vector similarity search for PostgreSQL

vector-db postgresql embeddings open-source
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#4
LanceDB ★ 11k+

Serverless vector database for AI applications

vector-db serverless embeddings open-source
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#5
Faiss ★ 41k+

Facebook's library for efficient similarity search and clustering

vector-search embeddings facebook open-sourceMIT
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#6
Sentence Transformers ★ 19k+

Multilingual sentence, paragraph and image embeddings

embeddings nlp search open-source
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#7
Weaviate ★ 17k+

Open-source vector database with hybrid semantic search

vector-db hybrid-search open-source go
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#8
Gensim ★ 16k+

Topic modelling and document similarity library

nlp topic-modeling embeddings open-source
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Last updated: Aug 28, 2026 · Curated by AI Tools Hub Editorial · About · Contact · Privacy