Mnemosyne
Zero-cloud, SQLite-backed memory layer for Hermes, Claude Code, Cursor, Codex and custom agents with a single Python dependency.
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About Mnemosyne
Mnemosyne is listed in our memory & RAG category and is aimed at builders. Zero-cloud, SQLite-backed memory layer for Hermes, Claude Code, Cursor, Codex and custom agents with a single Python dependency. Pricing, as the maker states it: Open source. Maturity: Active. We last checked the official link on 2026-10-18.
Mnemosyne at a glance
- Category: Memory & RAG
- Built for: Developers and teams building with AI agents
- Pricing: Open source (as the maker states it)
- Licence: MIT License (OSI-approved open source)
- GitHub: mnemosyne-oss/mnemosyne · 3,479 stars (as of Oct 21, 2026)
- Latest release: v4.0.0b5, Oct 19, 2026
- Last commit: Oct 21, 2026
- Official site: mnemosyne.site
- Listed on AgentScout: Oct 18, 2026
Mnemosyne FAQ
What is Mnemosyne?
Zero-cloud, SQLite-backed memory layer for Hermes, Claude Code, Cursor, Codex and custom agents with a single Python dependency.
How much does Mnemosyne cost?
Mnemosyne's pricing, as the maker states it: Open source. Open-source tools are free to use, though you may still pay for model API usage or a hosted plan. Check the official site for current plans.
Is Mnemosyne open source?
Yes. Mnemosyne's GitHub repository is published under the MIT License, according to the licence file in the repo.
Where can I find Mnemosyne's source code?
On GitHub at mnemosyne-oss/mnemosyne, which had 3,479 stars as of Oct 21, 2026. The latest release is v4.0.0b5 (Oct 19, 2026).
What are alternatives to Mnemosyne?
Similar tools include memU, ai-memory, Basic Memory, ktx, Graphicle and KiwiFS.
Facts from our link-checked listing, the GitHub repository and the official site. See something wrong? Suggest an edit.
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Mnemosyne alternatives
Other memory & RAG tools in our directory. See all memory & RAG tools →
memU
Lightweight memory system that gives Codex, Claude Code, Cursor and other agents a shared memory across sessions and devices and distills reusable skills.
ai-memory
Fabio Akita's open-source long-term memory layer for coding agents: one Rust binary that keeps plain-markdown project memory and typed handoffs shared across 20+ harnesses such as Claude Code, Codex, Cursor and Gemini CLI, so you can switch agents, machines or teammates without re-explaining the project.
Basic Memory
Persistent memory for Claude, Codex and Cursor stored as local Markdown knowledge, available open source or as a hosted cloud workspace.
ktx
An open-source context layer for data and analytics agents that gives Claude Code, Codex and other agents a self-improving map of your warehouse, metrics and business definitions.
Graphicle
Graphicle, from KarLex AI, is a single local Rust program that gives Claude Code, Cursor, Codex and other MCP agents a code graph and memory, returning excerpts with file and line references from your code, docs and past sessions, with no account or telemetry.
KiwiFS
A markdown filesystem for agents and teams: searchable, structured and versioned knowledge in a single binary that agents can read and write.
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