Best Open Source Vector Databases using Golang in 2026

Milvus

High-performance vector database for GenAI applications

Stars
43,999
Forks
3,981
Last commit
10 hours ago

Open-source vector database optimized for similarity search, scaling to billions of vectors with minimal performance loss

Open Source Alternative to:

Supabase

Chroma

Open-source vector database for AI search and retrieval

Stars
27,642
Forks
2,219
Last commit
1 day ago

Open-source vector database designed for AI applications. Store, search, and retrieve embeddings with semantic similarity matching and metadata filtering.

Open Source Alternative to:

Supabase

Weaviate

AI-native vector database for intuitive applications

Stars
16,081
Forks
1,267
Last commit
12 hours ago

Open-source vector database designed for building powerful, production-ready AI applications with hybrid search capabilities and flexible deployment options.

Open Source Alternative to:

Supabase

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Stars
Forks
Last commit

Milvus

High-performance vector database for GenAI applications

Stars
43,999
Forks
3,981
Last commit
10 hours ago

Open-source vector database optimized for similarity search, scaling to billions of vectors with minimal performance loss

Open Source Alternative to:

Supabase

Chroma

Open-source vector database for AI search and retrieval

Stars
27,642
Forks
2,219
Last commit
1 day ago

Open-source vector database designed for AI applications. Store, search, and retrieve embeddings with semantic similarity matching and metadata filtering.

Open Source Alternative to:

Supabase

Weaviate

AI-native vector database for intuitive applications

Stars
16,081
Forks
1,267
Last commit
12 hours ago

Open-source vector database designed for building powerful, production-ready AI applications with hybrid search capabilities and flexible deployment options.

Open Source Alternative to:

Supabase

Open Source Vector Databases using Golang

A curated collection of the best open source databases optimized for storing and searching vector embeddings. using Golang.

Milvus

Chroma

Weaviate

Milvus

Chroma

Weaviate