mem9.ai
Persistent, shared memory for agents
What it does
Personal AI assistants like OpenClaw lose everything when a session ends. Memory is stuck in local files, siloed per agent, and tied to one machine. Your teammate's agent can't learn from yours. mem9.ai is an open-source memory server (Apache-2.0) that gives every agent in your stack a shared, cloud-persistent memory layer with hybrid vector + keyword search. Agent plugins are stateless — all memory lives in mnemo-server.
Does the same job
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AgentmemoryMay 2026 · agent-memory.dev · ▲322Persistent memory for Claude Code, Codex & coding agents
- MMMuscle-Mem, a behavior cache for AI agents2025 · github.com · ▲226
Hi HN! Erik here from Pig.dev, and today I'd like to share a new project we've just open sourced: Muscle Mem is an SDK that records your agent's tool-calling patterns as it solves tasks, and will deterministically replay those learned trajectories whenever the task is encountered again, falling back to agent mode if edge cases are detected. Like a JIT compiler, for behaviors. At Pig, we built computer-use agents for automating legacy Windows applications (healthcare, lending, manufacturing, etc). A recurring theme we ran into was that businesses already had RPA (pure-software scripts), and…
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