Best Vector Databases GitHub Repositories

The AI search platform

Open-source framework for building agentic apps in JavaScript, Go, Dart, and Python, built and used in production by Google

HelixDB is an OLTP graph database with native vector and full-text search built in Rust on Object Storage.

Apache Pinot: a real-time analytics database for low-latency SQL and vector search, serving user-facing and agent-facing applications

The AI-native database built for LLM applications, providing incredibly fast hybrid search of dense vector, sparse vector, tensor (multi-vector), and full-text.

RuVector provides High Performance, Real-Time decisions and agent memory , Self-Learning Ai, Vector GNN DB built in Rust.

Local persistent memory store for LLM applications including claude desktop, github copilot, codex, antigravity, etc.

CrateDB is a distributed and scalable SQL database for storing and analyzing massive amounts of data in near real-time, even with complex queries. It is PostgreSQL-compatible, and based on Lucene.

Knowhere extracts, parses, and outputs structured chunks ready for AI Agents and RAG.

Enterprise-grade (40m+ LOC) codebase intelligence, zero-setup, local & private Plugin/Skill/Extension or MCP: hybrid semantic search, polyglot dependency graphs, symbol-level impact analysis & call-flow, interactive HTML viewer, cross-project & branch-aware search, DB/API/infra knowledge. 61% less tokens, 84% fewer calls, 37x faster. Cloud in beta.

This is the Official source code repository of Synfig Studio animation software

The Agentic Framework of the PHP ecosystem to build production-ready AI driven applications. Connect components (LLMs, Tools, vector DBs, memory) to agents that interact with your data and UI.

AI-native HTAP database with Git-for-Data and built-in vector search, serving as the data and memory backbone for intelligent agents and applications.

Open-source persistent memory for AI agent pipelines (LangGraph, CrewAI, AutoGen) and Claude. REST API + knowledge graph + autonomous consolidation.

SeekStorm: vector & lexical search - in-process library & multi-tenancy server, in Rust.

OpenCode plugin that gives coding agents persistent memory using local vector database

'Small vector' optimization for Rust: store up to a small number of items on the stack

LLPhant - A comprehensive PHP Generative AI Framework using OpenAI GPT 4. Inspired by Langchain

Vector map library and writer - running on Android and Desktop.

Nearest Neighbor Search with Neighborhood Graph and Tree for High-dimensional Data