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Chroma Alternatives in 2026

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

8 Alternatives
100% Open Source
Free To Self-Host

What are the best Chroma alternatives in 2026?

The best open-source Chroma alternatives in 2026 are Milvus, Qdrant, pgvector, txtai, FlagEmbedding. These tools cover the same use cases as Chroma — open-source ai-native vector database — 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
Milvus ★ 46k+ Top Pick

Open-source vector database for scalable similarity search

vector-db embeddings open-source cloud-nativeApache-2.0
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#2
Qdrant ★ 34k+ Top Pick

High-performance vector similarity search engine

vector-db embeddings rust open-sourceApache-2.0
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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
txtai ★ 13k+

All-in-one open-source embeddings database

embeddings search rag open-source
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#5
FlagEmbedding ★ 12k+

Retrieval and embedding models including BGE series

embeddings retrieval rag open-source
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#6
LanceDB ★ 11k+

Serverless vector database for AI applications

vector-db serverless embeddings open-source
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#7
LangChain ★ 144k+

Framework for building LLM-powered applications

llm framework rag open-sourceMIT
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#8
LlamaIndex ★ 52k+

Data framework for LLM applications over custom data

rag framework llm open-sourceMIT
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Last updated: Aug 28, 2026 · Curated by AI Tools Hub Editorial · About · Contact · Privacy