GreyCat

GreyCat is ranked #58 of 74 in database software on The Geeks Club, made by GreyCat (Luxembourg). It runs on Self-hosted. There is a free plan.

GreyCat plans and pricing

All plans

Community Free Self-hosted · Unified time-series, graph, geospatial and vector store · MCP server and OpenAPI · On-device embeddings · REST and JSON-RPC API · RBAC and token authentication greycat.io · 28 Sept 2026

Pro Not published Pro libraries for full-text and hybrid search, AI and algebra ML · Enterprise connectors · OIDC single sign-on · Monitoring and profiler · Live and delta backup · Email and priority support greycat.io · 28 Sept 2026

Enterprise Not published Uptime SLAs · EU-sovereign, on-prem, air-gapped or BYO-cloud deployment · Dedicated support and onboarding · Security review · Custom terms greycat.io · 28 Sept 2026

Compared on database software

Free plan: Yes
Database model: graph
Deployment options: both
SQL support: No
Vector search: Yes

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GreyCat

Unified database: Combines time-series, graph, geospatial, vector and full-text search in one engine.
Free edition: The Community edition is free forever with no time limit or usage clock.
Free plan limits: The page does not state a storage, worker, cache or usage limit for Community.
Self-hosting: GreyCat runs as a self-contained binary on the customer's own infrastructure.
Binary size: The standalone binary is approximately 4.6 MB.
On-device AI: AI runs on-device so prompts and documents stay within the deployment.
Access control: Community includes role-based access control and token authentication.
Enterprise identity: Pro adds OIDC single sign-on.
Enterprise deployment: Enterprise supports EU-sovereign, on-premises, air-gapped and BYO-cloud deployments.
Enterprise connectors: Connectors include PostgreSQL, Kafka, OPC-UA, MQTT, S3, SFTP, OpenStreetMap and IFC.
API protocols: GreyCat provides REST, JSON-RPC, OpenAPI and SDK code generation.
Agent support: A built-in MCP server and OpenAPI support make functions available to AI agents.
Search features: Pro adds full-text and hybrid search, AI and algebra machine learning libraries.
Support levels: Community support is via GitHub and Discord; Pro adds email and priority support.
Price from: Free

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Where it ranks on The Geeks Club

Best Database Software in 2026#58 of 74

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Sources

greycat.io· checked 28 Sept 2026
greycat.io/pricing.html· checked 28 Sept 2026