Prompt Security (SentinelOne) alternatives

AI security platform that controls employee AI tool usage, protects homegrown AI apps and autonomous agents, and redacts sensitive data and enforces policy across AI services. Full Prompt Security (SentinelOne) record →

  1. 1 Presidio Guardrails & AI security

    also in Guardrails & AI security

    OSS ✓ Self-host ✓ Managed ? MCP ? ★ 12k released 2026-10-29 MIT Compare with Prompt Security (SentinelOne) →

  2. 2 NVIDIA NeMo Guardrails Guardrails & AI security

    also in Guardrails & AI security

    OSS ✓ Self-host ✓ Managed ? MCP ? ★ 7.4k released 2026-10-29 Apache-2.0 Compare with Prompt Security (SentinelOne) →

  3. 3 PyRIT Guardrails & AI security

    also in Guardrails & AI security

    OSS ✓ Self-host ✓ Managed ? MCP ? ★ 4.7k released 2026-10-29 MIT Compare with Prompt Security (SentinelOne) →

  4. 4 Meta Llama Protections (Llama Guard, Prompt Guard, LlamaFirewall) Guardrails & AI security

    also in Guardrails & AI security

    OSS ✓ Self-host ✓ Managed ? MCP ? ★ 4.5k released 2026-10-12 Llama 3.2 Community License (Llama Guard /… Compare with Prompt Security (SentinelOne) →

  5. 5 Arthur Engine Guardrails & AI security

    also in Guardrails & AI security

    OSS ✓ Self-host ✓ Managed ? MCP ? ★ 93 released 2026-10-28 MIT Compare with Prompt Security (SentinelOne) →

  6. 6 Amazon Bedrock Guardrails Guardrails & AI security

    also in Guardrails & AI security

    OSS — Self-host ? Managed ? MCP ? proprietary Compare with Prompt Security (SentinelOne) →

  7. 7 Azure AI Content Safety Prompt Shields Guardrails & AI security

    also in Guardrails & AI security

    OSS — Self-host ? Managed ? MCP ? proprietary Compare with Prompt Security (SentinelOne) →

  8. 8 Google Cloud Model Armor Guardrails & AI security

    also in Guardrails & AI security

    OSS — Self-host ? Managed ? MCP ? proprietary Compare with Prompt Security (SentinelOne) →

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.