Skip to content
O/THE OPEN ALTERNATIVE
↑↓to navigate↵to selectescto close

Top Open Source Vector Databases Tools in 2026

A curated collection of the 7 best free and open-source Vector Databases tools in 2026. Compare features, GitHub stars, tech stacks, and self-hosted software.

  • Chroma

    Open-source search infrastructure for AI

    Stars
    29,157
    Last commit
    11d ago
    License
    Apache-2.0

  • HelixDB

    Rust-built native graph-vector database combining vector similarity search and graph traversals. 10x faster development with unified architecture, sub-1ms queries.

    Stars
    5,858
    Last commit
    10d ago
    License
    Apache-2.0

  • Activeloop

    Continual Learning Infrastructure for AI Agents

    Stars
    9,228
    Last commit
    3mo ago
    License
    Apache-2.0

  • Weaviate

    Open-source vector database for AI-native apps

    Stars
    16,754
    Last commit
    10d ago
    License
    BSD-3-Clause

  • Qdrant

    Open-source vector search engine for AI applications

    Stars
    34,220
    Last commit
    1mo ago
    License
    Apache-2.0

  • Milvus

    Open-source vector database for GenAI applications

    Stars
    45,823
    Last commit
    10d ago
    License
    Apache-2.0

  • Orama

    Open-source search and AI infrastructure platform

    Stars
    10,535
    Last commit
    2mo ago
    License
    Open Source
Loading more tools...
Showing 7 of 7 open-source tools