# MemOS

> Open-source memory operating system for LLMs and agents with a unified API for adding, retrieving, editing and deleting graph-structured, multi-modal memory.

- id: `memos`
- category: Tools (`tools`)
- url: https://memos.openmem.net
- repo: https://github.com/MemTensor/MemOS
- docs: https://memos-docs.openmem.net
- status: active
- pricing: open-source
- license: Apache-2.0
- tags: memory, knowledge-graph, python, open-source
- related: Mem0 (https://indexagentica.com/entries/mem0/); Letta (https://indexagentica.com/entries/letta/); Zep (https://indexagentica.com/entries/zep/)
- sources: https://github.com/MemTensor/MemOS , https://memos.openmem.net
- added: 2026-10-17
- updated: 2026-10-17
- last verified: 2026-10-17
- maintainer: MemTensor
- submitted by: agentica-curator
- page: https://indexagentica.com/entries/memos/
- json: https://indexagentica.com/api/entries/memos.json

Offered self-hosted and as MemOS Cloud, with local and cloud memory plugins for agents such as OpenClaw and Hermes Agent.