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Category · 151 tools

Vector Databases

Vector databases store embeddings for similarity search, the retrieval layer behind most RAG stacks. Use a dedicated store when you need scale, hybrid search, or managed ops; pgvector or an in-memory index often wins below ~100k vectors. GraphCanon ranks tools by live GitHub stars and freshness, then links head-to-head compares and alternatives so you can pick on constraints, not hype. milvus currently leads this list at 45,402 GitHub stars among 151 published tools.

GraphCanon updated today · 88 views this month

151

Tools

12

Languages

45k

Leader stars

milvus

Top tool

Featured comparisons in Vector Databases

Qdrant vs Chroma Qdrant vs Weaviate Qdrant vs pgvector

All comparisons →

Alternatives hubs

Graph-backed OSS-vs-OSS alternatives for the highest-intent tools in Vector Databases.

Qdrant alternatives Chroma alternatives Weaviate alternatives

Stacks using Vector Databases

The RAG stackstack →

Tools in this category

The highest-adoption tools in Vector Databases, linked as a neighbourhood. Follow any node to keep traversing.

redis76k★llm-app59k★meilisearch59k★mempalace58k★milvus45k★tidb40k★qdrant34k★dragonfly31k★cognee30k★

Showing the top 60 of 151.

milvus

High-performance cloud-native vector database

Very activeGoannscloud-nativepushed 3w

WeKnora

Open-source LLM knowledge platform for creating a queryable RAG, autonomous reasoning agent, and self-maintaining Wiki.

Very activeGoagentagenticpushed 5d

qdrant

High-performance, massive-scale Vector Database and Vector Search Engine

Very activeRustai-searchai-search-enginepushed 3w

tidb

Scalable, cloud-native database with ACID transactions and vector search support.

Very activeGoagentagent-contextpushed 3d

cognee

Cognee is the open-source AI memory platform for agents.

Very activePythonagent-memoryagent-skillspushed 2d

meilisearch

A lightning-fast search engine API bringing AI-powered hybrid search to your sites and applications.

Very activeRustaiapipushed 1w

redis

Redis is a preferred cache, data structure server, and document & vector query engine for real-time applications.

Very activeCcachecachingpushed 4w

langchain4j

Java library for building LLM-powered applications on the JVM

Very activeJavaanthropicchatgptpushed 2w

llm-app

Ready-to-run cloud templates for RAG, AI pipelines, and enterprise search with live data.

SteadyJupyter Notebookchatbothugging-facepushed 1mo

zvec

A lightweight, lightning-fast, in-process vector database

Very activeC++agent-skillsdbpushed 4d

mempalace

The best-benchmarked open-source AI memory system.

Very activePythonaichromadbpushed 6d

weaviate

Open-source vector database for storing objects and vectors with structured filtering

Very activeGoapproximate-nearest-neighbor-searchgenerative-searchpushed 2w

turbovec

A vector index built on TurboQuant, written in Rust with Python bindings

Very activeRustannavx512pushed 3d

memvid

Memory layer for AI Agents

SteadyRustaicontextpushed 1mo

orama

A complete search engine and RAG pipeline with support for full-text, vector, and hybrid search.

ActiveTypeScriptalgiorithmdata-structurespushed 2w

RuVector

High Performance Real-Time Self-Learning Ai Vector GNN Memory DB

Very activeRustaiai-ocrpushed 4w

infinity

AI-native database for LLM applications offering fast hybrid search capabilities.

Very activeC++ai-nativeapproximate-nearest-neighbor-searchpushed 4d

OpenMemory

Local persistent memory store for LLM applications

Very activeTypeScriptaiai-agentspushed 1d

claude-context

Code search MCP for Claude Code. Make entire codebase the context for any coding agent.

SteadyTypeScriptagentagentic-ragpushed 1mo

chroma

Search infrastructure for AI

Very activeRustagentsaipushed 3w

oceanbase

The Fastest Distributed Database for Transactional, Analytical, and AI Workloads

Very activeC++analyticscloud-nativepushed today

SocratiCode

Enterprise-grade codebase intelligence with local setup, hybrid semantic search, and polyglot dependency graphs

Very activeTypeScriptaiai-assistantpushed 1w

core

AI agent microservice

ActivePythonag-ui-protocolagentpushed 3w

vespa

The AI search platform

Very activeJavaaibig-datapushed 3d

TencentDB-Agent-Memory

Fully local long-term memory for AI Agents via 4-tier pipeline

Very activeTypeScriptagentai-agentpushed 1mo

bootcamp

Dealing with all unstructured data including reverse image search, audio search, molecular search, video analysis, and question-answer systems.

ActiveJupyter Notebookaudio-searchdeep-learningpushed 1w

examples

Jupyter Notebooks to help you get hands-on with Pinecone vector databases

Very activeJupyter Notebookaijupyter-notebookpushed 1w

vearch

Distributed vector search for AI-native applications

ActivePythonai-nativeai-native-databasepushed 3w

VCPToolBox

VCP acts as middleware between AI model APIs and frontend applications for AGI OS development. It enhances LLMs with statefulness, memory, tool invocation capabilities.

Very activeJavaScriptagent-frameworkai-agentpushed today

dragonfly

A modern replacement for Redis and Memcached

Very activeC++cachecpppushed 4w

helix-db

OLTP graph-vector database built in Rust on Object Storage

Very activeRustaiclipushed 3d

JustHireMe

Local-first AI job intelligence workbench for scraping roles, ranking fit, and generating tailored application materials.

ActivePythonagentsaipushed 1w

lancedb

Developer-friendly OSS embedded retrieval library for multimodal AI.

Very activeRustapproximate-nearest-neighbor-searchimage-searchpushed 3w

databend

All-in-One Data Warehouse: Analytics, Search, AI, and Python Sandboxing Reimagined From Scratch.

Very activeRustaibigdatapushed today

EmbedAnything

Highly Performant, Modular, Memory Safe and Production-ready Inference, Ingestion and Indexing built in Rust

ActiveRustaicloudpushed 1w

rag_api

ID-based RAG FastAPI: Integration with Langchain and PostgreSQL/pgvector

Very activePythonapiapi-restpushed 6d

selfhost-ai

Self-hosted AI automation platform

ActiveShellaiai-agentspushed 4w

fastembed

Fast, Accurate, Lightweight Python library for creating state-of-the-art embeddings

Very activePythonembeddingsopenaipushed 1mo

SeekStorm

Vector & Lexical Search Library and Multi-tenancy Server

Very activeRustai-searchbm25pushed today

Agent_Memory_Techniques

Agent memory for LLMs: runnable Jupyter notebooks on various memory and knowledge techniques.

Very activeJupyter Notebookagent-memoryai-agentspushed 6d

OpenSwarm

Autonomous AI dev team orchestrator powered by Claude Code CLI.

Very activeTypeScriptai-agentsai-codingpushed today

automem

Graph-vector memory service for durable, relational AI assistant memory

ActivePythonaiai-memorypushed 1w

endee

A high-performance vector database handling up to 1B vectors on one node

ActiveC++ai-searchai-search-enginepushed 3w

deeplake

AI Data Runtime for Agents with scalable retrieval and training features

SteadyC++agentagentic-ragpushed 3mo

recipes

End-to-end notebooks for using Weaviate features and integrations.

ActiveJupyter Notebookfunction-callinggenerative-aipushed 1w

paradedb

One Postgres for your application data, full-text search, vector retrieval, and aggregations.

Very activeRustaggregationsanalyticspushed 2w

NornicDB

Distributed Graph+Vector Database with Temporal MVCC and Low-Latency HNSW Search

Very activeGoboltcypherpushed 1d

cuvs

A library for vector search and clustering on the GPU

Very activeCudaannsclusteringpushed 4w

Wax

Single-file memory layer for AI agents with sub-millisecond RAG on Apple Silicon using Metal optimization

Very activeSwiftai-agentsclipushed today

VectorChord

Scalable, fast, and disk-friendly vector search in Postgres

Very activeRustartificial-intelligencellmopspushed 3w

pgvector

Open-source vector similarity search for Postgres

Very activeCapproximate-nearest-neighbor-searchnearest-neighbor-searchpushed 3w

grepai

Semantic Search & Call Graphs for AI Agents (100% Local)

SteadyCaiclaude-codepushed 2mo

memsearch

A persistent, unified memory layer for all your AI agents backed by Markdown and Milvus.

Very activePythonagentagent-memorypushed 1mo

VectorDBBench

Benchmark for vector databases

ActivePythonbenchmarkcost-effectivenesspushed 1w

faraday

Open Source Vulnerability Management Platform

ActivePythonappsecburpsuitepushed 4w

qdrant-client

Python client for Qdrant vector search engine

Very activePythonqdrantvector-databasepushed today

MineContext

Proactive context-aware AI partner

SlowingPythonagentcontext-engineeringpushed 3mo

matrixone

AI-native HTAP database with Git-for-Data and built-in vector search

Very activeGoagentsai-nativepushed today

infinispan

Highly scalable NoSQL cloud data store and in-memory cache platform

Very activeJavadatagridinfinispanpushed today

RediSearch

A query and indexing engine for Redis

Very activeRustfulltextgeospatialpushed 1d

Common questions

What are the best vector databases tools?: GraphCanon ranks Vector Databases tools by GitHub adoption and freshness. milvus is the current leader (45,402 stars). See the full list on this page - sorted by stars, with maintenance labels and graph relationships.
How does GraphCanon rank Vector Databases tools?: We sort by GitHub stars and push recency on category pages, not paid placement. Alternatives and compare pages use typed graph edges (alternative, successor, integrates_with) plus shared categories - constraint-first, not marketing votes.
How many tools are in Vector Databases?: 151 published tools are tagged with Vector Databases in the GraphCanon knowledge graph.
What are popular Vector Databases comparisons?: Head-to-head compare pages in this category include Qdrant vs Chroma, Qdrant vs Weaviate, Qdrant vs pgvector. Each comparison uses live GitHub stats and optional trust signals - see the comparisons block on this page.
Which stacks use Vector Databases?: Curated workflow pages that include Vector Databases: The RAG stack. Each stack step includes when-not-to-use guidance.
Where are graph-backed alternatives hubs for Vector Databases?: High-intent OSS-vs-OSS alternatives pages include Qdrant alternatives, Chroma alternatives, Weaviate alternatives. Each hub ranks typed graph neighbors and constraint tags - not popularity votes.
Is there a machine-readable Vector Databases list?: Yes. Append .md to this URL or fetch `/md/categories/vector-databases` for a markdown twin. The JSON API exposes the same corpus at `/api/graphcanon/categories/vector-databases`.

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