Catalog Catalogs Retrieval & Data Infrastructure
Retrieval & Data Infrastructure
Vector stores, knowledge graphs, embeddings and search that memory is built on. For builders picking storage and retrieval substrate.
Vector databases, graph platforms, embedding and reranker services and search engines, compared on deployment, pricing, backend, consistency, multi-tenancy and the memory layers and frameworks each one is documented to work with.
58 systems · 5 sections · 9 acquired, archived, stale or shut down · data as of 2026-10-31
Decide
- Choose a vector or graph databaseThree cited picks for your language, hosting and must-haves.
- What will a vector store cost?Published list prices at your volume; not published is said so.
- Does it work with my memory layer?Integration evidence between stores, memory layers and frameworks.
- AlternativesLive options ranked by shared design and must-haves.
Most referenced
Lowest tier first, then by how many other systems in the catalog reference each one.
- Qdrant T1 Vector DB + DBSF + RRF
- Voyage AI (MongoDB) T1 Acquired Premium embedding + reranker API
- Chroma T1 Acquired Embedded vector DB (Rust core)
- pgvector T1 PostgreSQL vector extension
- Weaviate T1 Hybrid vector DB + learned ranking
- Milvus T1 Multi-vector + hybrid + GPU
- Pinecone T1 Managed vector DB + cascading retrieval
- MongoDB Atlas Vector Search T1 Vector embedded in document DB
- Neo4j T1 Property graph + vectors + Aura Agent
- Cohere Embed T1 Hosted embeddings API
- Elasticsearch T1 Mature hybrid search
- Jina AI Embeddings T1 Acquired Open embedding models + API
Sections
- Knowledge-graph platforms 16
- Vector-database infrastructure 15
- Embedding & reranker services 11
- Search platforms (non-memory) 8
- Enterprise-search adjacencies 8
Lifecycle
- Active 47
- Renamed 2
- Acquired 7
- Deprecated 1
- Archived 1
Tiers: T1 38 · T2 17 · T3 3 · T4 0 · T5 0
Recently changed
- ArangoDB Homepage: https://arango.ai/
- Chroma Pricing: Chroma Cloud winding down: read-only from 2026-11-22, no reads after 2026-12-22, no new Cloud plans; open-source ChromaDB free (Apache-2.0) · Funding / ownership: Acquired by Replit (definitive agreement announced 2026-10-23); prior $18M total $75M val Seed · 2023-04
- Databricks Vector Search (now Databricks AI Search) Name: Databricks Vector Search (now Databricks AI Search) · Homepage: https://www.databricks.com/product/artificial-intelligence/ai-search
- Dgraph Homepage: https://docs.dgraph.io/
- Jina AI Embeddings License: mixed — most recent open-weight models CC-BY-NC-4.0 (v3, v5-omni, v5-text, clip-v2, colbert-v2, reranker-v3; commercial licence via Elastic); jina-embeddings-v4 under the Qwen Research License (its model card says the initial CC-BY-NC-4.0 label was an error); some older models Apache-2.0
- Jina AI Embeddings Pricing: Hosted API: prepaid token packages with a free trial key and optional auto-recharge (pricing model since 2025-05-06); also on AWS SageMaker and Microsoft Azure; Jina On-Prem containers sold through Elastic Sales
- Nomic Embed Homepage: https://huggingface.co/nomic-ai/nomic-embed-text-v1.5
- Ontotext GraphDB / Graphwise License: proprietary; GraphDB Free (free-to-use non-commercial option) and Enterprise Edition; every edition needs a licence file (Free licence emailed on request)
Research
Data and tools
- JSON · CSV, flattened, one row per system, CC-BY-4.0
- MCP tools:
choose_framework_or_store,estimate_vector_store_cost,check_compatibility,find_alternatives - CLI:
landscape choose-stack data·landscape compat <ids…> - Data & API · Submit a system