Best Open Source Vector Databases using GCP in 2026

Milvus

High-performance vector database for GenAI applications

Stars
44,798
Forks
4,067
Last commit
1 hour 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
28,444
Forks
2,323
Last commit
5 hours 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
16,330
Forks
1,309
Last commit
42 minutes 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
44,798
Forks
4,067
Last commit
1 hour 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
28,444
Forks
2,323
Last commit
5 hours 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
16,330
Forks
1,309
Last commit
42 minutes 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 GCP

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

Milvus

Chroma

Weaviate

Milvus

Chroma

Weaviate