# Best free MemOS alternatives

9 free alternatives to MemOS and 0 more. MemOS is free.

## Alternatives

- [RAGFlow](https://aitools.flocci.in/tool/ragflow) — Free — Open-source RAG engine with deep document parsing and agent workflows
- [Mem0](https://aitools.flocci.in/tool/mem0) — Freemium — Free Hobby tier: unlimited end users, 10K add / 1K retrieval requests/month
- [Zep](https://aitools.flocci.in/tool/zep) — Freemium — Free plan: 10,000 monthly credits, 2 projects, 200ms retrieval
- [Supermemory](https://aitools.flocci.in/tool/supermemory) — Freemium — Free monthly usage allowance plus a Supermemory MCP server
- [Letta](https://aitools.flocci.in/tool/letta) — Freemium — Free BYOK plan supporting up to 3 stateful agents
- [Memori](https://aitools.flocci.in/tool/memori) — Freemium — LLM-agnostic memory layer that captures agent context as structured state
- [LightRAG](https://aitools.flocci.in/tool/lightrag) — Free — Simple, fast graph-based RAG from HKU Data Science lab (EMNLP 2025)
- [Cognee](https://aitools.flocci.in/tool/cognee) — Free — Open-source memory platform that turns data into a knowledge graph plus vectors for agents
- [Graphiti](https://aitools.flocci.in/tool/graphiti) — Free — Framework for building real-time temporal knowledge graphs for AI agents

## FAQ

### What is the best free alternative to MemOS?

RAGFlow is the closest free alternative to MemOS: same Agent Memory & RAG-as-a-Service sub-category, and it is free. Open-source RAG engine with deep document parsing and agent workflows

### Are there free MemOS alternatives?

Yes — 9 of the 9 alternatives listed here are free or freemium: RAGFlow, Mem0, Zep, Supermemory, Letta. None of them are paid-only.

### Is MemOS free?

MemOS is free. There is no paid plan attached to it in the catalog.

### How were these MemOS alternatives chosen?

They are the other tools in Agent Memory & RAG-as-a-Service, then the rest of AI Agents & Automation, ordered free tiers first and capped at 9. There is no sponsorship and no paid placement in that ordering — only the pricing tier decides.

## Related

- [MemOS](https://aitools.flocci.in/tool/memos)
- [Agent Memory & RAG-as-a-Service](https://aitools.flocci.in/category/ai-agents-automation/agent-memory-rag-as-a-service)
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Source: Flocci AI Tools — https://aitools.flocci.in/alternatives/memos

Facts last verified: October 2026