What OpenMemory is
The name OpenMemory is used by more than one project. This page refers to the OpenMemory MCP server published by the mem0 team: a local-first memory server that MCP clients on your machine can share.
What Auld is
Auld is a memory service. Your systems send time-stamped records; Auld extracts memories, reconciles changes into current state with history, and returns cited memories scoped to the viewer, over REST or MCP.
Differences in design
| Dimension | OpenMemory | Auld |
|---|---|---|
| Where it runs | Your machine | Managed service or your cloud |
| Sharing | Clients on one machine | Teams, customers and services via audiences |
| Time and supersession | Check current docs | Built in |
| Use in your product | Personal tool | API for multi-tenant products |
How to choose
Choose OpenMemory when
- You want private, local memory for your own tools.
Choose Auld when
- Memory must be shared across a team or used inside your product for many users.
Evaluate and verify
Trade-offs depend on your data. Run the same test set against each option — the methodology page has a checklist — and confirm current capabilities in the official documentation.
Sources: OpenMemory page · OpenMemory source