Memory framework / library

Personal memory across agents, with CLIs (including a Codex CLI) and hosted or local storage.

Research memory operating system for personalized agents (EMNLP 2025), with an MCP server.

Open-source AI memory platform: builds knowledge graphs plus vectors from your data for agents.

Memory management kit for agents from the AgentScope team, with plugins for coding agents.

Framework for real-time, temporally-aware knowledge graphs for agents; the engine behind Zep.

Stateful agents with self-editing memory (formerly MemGPT). Active source has moved to letta-code.

Single-file memory layer for agents: portable, versioned memory without a database server.

All-in-one embeddings database and AI framework with web and MCP APIs; usable as a local semantic memory store.

Memory OS for LLMs and agents with hybrid retrieval and skill reuse; cloud plugin and local plugin.

Open-source memory layer for autonomous agents built on knowledge graphs.

LangChain library for agents to extract, store and update long-term memory, built on LangGraph stores.

Research library (ICLR 2026) for lightweight memory-augmented generation, with an optional MCP server.

Research library for agentic memory (Zettelkasten-style linked notes) for LLM agents.

Evidence-first local memory runtime for agents: admission policies, temporal versions and citations, with an MCP server extra.