OpenMemory (from the Mem0 team) is a local-first MCP memory server: your AI apps' memories stay in a store you run yourself, private by default. If your hard requirement is that memory never leaves your machine, that's the point of it — and a cloud service isn't what you want. For most other setups, locality is the limitation.
What local memory can't do
- Follow you: a store on one machine doesn't exist on your laptop, your desktop, or your phone.
- Be shared: teammates' agents can't build on what yours learned.
- Survive: reinstalls and dead disks take the memory with them unless you run backups.
- Serve non-local clients: a SaaS backend or a hosted agent can't reach localhost.
The cloud trade, done carefully
Kit for AI keeps the same agent-facing shape — remember/recall/search over MCP — but the store is one account in the cloud: shared across every machine and model, with encryption at rest for stored credentials and content, owner-scoped access, and an audit trail of what agents wrote. Plus the parts a local memory box doesn't attempt: document ingestion, OCR, URL conversion, and knowledge-base chat with citations.
Which should you pick?
Strict data-locality requirement: run OpenMemory. Memory that follows you across tools, machines, and a team — with the content pipeline attached: Kit for AI, free to start.