Memory &amp; RAG

Ragas

Evaluation toolkit for measuring RAG pipeline quality.

R2R

Production-oriented AI retrieval system with RAG and agentic reasoning over a REST API.

Unstructured

ETL platform that turns raw documents into RAG-ready structured data.

Ragie

Fully managed multimodal RAG-as-a-service for AI application builders.

Vectara

Managed RAG and agent platform with built-in hallucination detection.

LightRAG

Lightweight graph-plus-vector RAG framework from HKU.

GraphRAG

Microsoft's pipeline for knowledge-graph-based retrieval augmented generation.

txtai

All-in-one embeddings database and framework for semantic search and RAG.

RAGFlow

Open-source RAG engine with deep document understanding and agent orchestration.

Deep Lake

Activeloop's storage engine for vectors, tensors, and multimodal AI data.

Neo4j

Graph database with vector indexes used for GraphRAG and knowledge-grounded agents.

Supabase

Open-source Postgres platform with pgvector-powered embedding storage.

MongoDB Atlas Vector Search

Vector search integrated into the MongoDB Atlas document database.

Elasticsearch

Distributed search and analytics engine with dense and sparse vector retrieval.

Redis

In-memory data platform with vector search, semantic caching, and agent memory features.

OpenSearch

Open-source search and analytics suite with k-NN vector search.

Typesense

Fast open-source search engine with built-in vector and semantic search.

pgvector

Postgres extension adding vector similarity search to a standard database.

Faiss

Meta's library for efficient similarity search and clustering of dense vectors.

Memory & RAGPaid

turbopuffer

Serverless vector and full-text search database built on object storage.

VEVerified listing

Vespa

Distributed engine unifying vector search, text search, and ML-driven ranking.

LanceDB

Embedded vector database and multimodal lakehouse built on the Lance format.

Chroma

Open-source embedding database popular for prototyping and shipping RAG apps.

Qdrant

High-performance open-source vector search engine written in Rust.

Weaviate

Open-source AI database combining vector search, hybrid retrieval, and RAG modules.

Pinecone

Fully managed vector database for large-scale similarity search and RAG.

Memary

Open-source memory layer emulating human memory for autonomous agents.

LangMem

LangChain SDK for extracting and managing long-term agent memory.

Graphiti

Open-source temporal knowledge graph framework for agent memory.

Supermemory

Memory API with automatic fact extraction and connectors for agent context.

Cognee

Open-source memory engine that turns agent context into a queryable knowledge graph.

Zep

Managed memory platform for AI agents built on temporal context graphs.

Mem0

Universal memory layer that lets AI agents remember users across sessions.