Open source memory projects
Every project in the registry tagged memory, ranked by real GitHub adoption.
Persistent memory layer for AI agents and apps
Cross-platform lib for process and system monitoring in Python
The tensor database for AI data
MineContext is your proactive context-aware AI partner（Context-Engineering+ChatGPT Pulse）
Local persistent memory store for LLM applications including claude desktop, github copilot, codex, antigravity, etc.
Framework for AI agents to build and maintain a digital brain through Obsidian wiki
Decision audit trail + persistent memory for AI trading agents. Outcome-weighted recall, tamper-evident SHA-256 chain with RFC 3161 anchoring, 20 MCP tools.
Long-term memory for AI assistants. Graph + vector store that recalls decisions, relationships, and context across sessions.
Related tags
Frequently asked questions
How many open source memory projects are there?
This registry tracks 8 projects tagged memory, with 101,691 GitHub stars between them. The most-adopted is Mem0 at 65,505 stars.
Are these memory projects free to use?
Yes — 8 of the 8 carry an explicit open-source licence across 3 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which memory project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these memory projects still maintained?
6 of the 8 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.