Pensyve
An open-source runtime for persistent AI agent memory.
FrameworkAI ProductivityCross-PlatformFree
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Framework
NodeDB
The memory and storage engine for AI agents, from the edge to the cloud.
Day 43 since launch · Launched 25 August 2026
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What is NodeDB?
NodeDB is a memory and storage engine for AI agents that runs where the agent runs: embedded on device or in the browser, offline-capable, and syncing conflict-free to a server when connected. It combines semantic, relational, episodic and time-series memory in one PostgreSQL-compatible engine with access guards.
Pros
- Several kinds of agent memory in one engine
- Runs on device and offline, then syncs
- PostgreSQL-compatible queries
Cons
- Licence is not a standard one GitHub recognises
- A young project for something as critical as a database
Who should use NodeDB
Developers building agents that need durable memory on device and in the cloud.
Who may not need it
People happy with a simple vector store.
NodeDB alternatives
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Busabase
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Long-term memory for AI agents in plain Markdown.
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FastMemory
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Free alternatives to NodeDB
Free resources that cover similar ground.
Engraphis
Local-first, inspectable memory for coding agents across sessions and repositories.
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Durable, searchable memory of your past AI coding agent sessions.
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LaPis
Local, persistent SQLite memory for coding agents.
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A source-grounded MCP memory runtime and Obsidian-compatible vault template for LLM agents.
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Fast GraphRAG
RAG that intelligently adapts to your use case, data and queries.
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Kipi System
Your AI brain, externalized — remembers everything you do and becomes any role you need.
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