#vector-database

LlamaIndex is the leading document agent and OCR platform

Weaviate is an open-source vector database that stores both objects and vectors, allowing for the combination of vector search with structured filtering with the fault tolerance and scalability of a cloud-native database​.

A query and indexing engine for Redis, providing secondary indexing, full-text search, vector similarity search and aggregations.

Developer-friendly OSS embedded retrieval library for multimodal AI. Search More; Manage Less.

LangChain4j is an idiomatic, open-source Java library for building LLM-powered applications on the JVM. It offers a unified API over popular LLM providers and vector stores, and makes implementing tool calling (including MCP support), agents and RAG easy. It integrates seamlessly with enterprise Java frameworks like Quarkus and Spring Boot.

Milvus is a high-performance, cloud-native vector database built for scalable vector ANN search

Redis Vector Library (RedisVL) -- the AI-native Python client for Redis.

Cognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory across sessions with a self-hosted knowledge graph engine.

The AI search platform

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

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

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

Python SDK for Milvus Vector Database

One Postgres for your application data, full-text search, vector retrieval, and aggregations. Home of the pg_search extension.

ArcadeDB Multi-Model Database, one DBMS that supports SQL, Cypher, Gremlin, HTTP/JSON, MongoDB and Redis. ArcadeDB is a conceptual fork of OrientDB, the first Multi-Model DBMS. ArcadeDB supports Vector Embeddings.

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

Memory library for building stateful agents

RuVector is a High Performance, Real-Time, Self-Learning Ai, Vector GNN, Memory DB built in Rust.