Acuvity (now Proofpoint) alternatives

Acquired by Proofpoint (closed 2026-02-12). Runtime enforcement targeting memory poisoning, unauthorised execution, identity spoofing per the OWASP LLM threat list. Full Acuvity (now Proofpoint) record →

  1. 1 Microsoft Agent Governance Toolkit Memory governance, privacy & safety

    also in Memory governance, privacy & safety · same retrieval (agentic) · also self-hostable · also has MCP

    OSS ✓ Self-host ✓ Managed — MCP ✓ ★ 6.1k released 2026-06-11 MIT Compare with Acuvity (now Proofpoint) →

  2. 2 Mem0 Security / OpenMemory Memory governance, privacy & safety

    also in Memory governance, privacy & safety · also self-hostable · also offered managed · also has MCP

    OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 67k released 2026-09-25 Apache-2.0 Compare with Acuvity (now Proofpoint) →

  3. 3 Letta / MemGPT Dedicated memory layers

    same retrieval (agentic) · also self-hostable · also offered managed · also has MCP

    OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 3.7k released 2026-10-29 Apache-2.0 Compare with Acuvity (now Proofpoint) →

  4. 4 HiddenLayer AISec Platform 2.0 Memory governance, privacy & safety

    also in Memory governance, privacy & safety · also self-hostable · also offered managed · also has MCP

    OSS ? Self-host ✓ Managed ✓ MCP ✓ Compare with Acuvity (now Proofpoint) →

  5. 5 Zep — governance posture Memory governance, privacy & safety

    also in Memory governance, privacy & safety · also self-hostable · also offered managed · also has MCP

    OSS ? Self-host ✓ Managed ✓ MCP ✓ Compare with Acuvity (now Proofpoint) →

  6. 6 Pydantic-AI MemoryTool Framework-embedded memory

    same retrieval (agentic) · also self-hostable · also offered managed · also has MCP

    OSS ✓ Self-host ✓ Managed ✓ MCP ✓ ★ 20k MIT Compare with Acuvity (now Proofpoint) →

  7. 7 OpenClaw memory File-backed / editor paradigms

    same retrieval (agentic) · also self-hostable · also has MCP

    OSS ✓ Self-host ✓ Managed ? MCP ✓ ★ 393k released 2026-10-22 MIT Compare with Acuvity (now Proofpoint) →

  8. 8 Hermes Agent memory (Nous Research) Framework-embedded memory

    same retrieval (agentic) · also self-hostable · also has MCP

    OSS ✓ Self-host ✓ Managed ? MCP ✓ ★ 256k released 2026-10-22 MIT Compare with Acuvity (now Proofpoint) →

Ranked by shared memory design (storage, retrieval, conflict handling, memory unit), same section and shared must-haves (open source, self-hosting, MCP), with adoption as a tie-breaker. ✓ confirmed · — no · ? not in the catalog yet. Want picks for your own requirements? Use the chooser. Checking a whole project? Check your stack.