MemOS is listed under Agent Memory & RAG-as-a-Service, in the AI Agents & Automation category on Flocci AI Tools. Memory operating system for LLM agents with hybrid retrieval and persistent memory. It is free, with no paid plan attached, and it lives at memos.openmem.net.
MemOS is listed as fully free — there is no paid tier attached to it in the catalog. That makes it one of the 399 entries on Flocci AI Tools with no upgrade path built in.
MemOS does 4 things the catalog singles out: Memory operating system for llm agents with hybrid retrieval and persistent memory; open source and self-hostable, with a cloud option; built for multi-agent and personal assistants; backed by memtensor, a shanghai team.
Basic Memory is the closest free alternative: it sits in the same Agent Memory & RAG-as-a-Service sub-category and is free. Cognee, Graphiti and LightRAG also start free. The full list is on the alternatives page.
See the full list →