HOL alternatives

6 tested alternatives to HOL. Each was assigned the same job label from a fixed vocabulary we maintain — not from how the vendor describes itself — and every one is scored on the same objective 7-Frame benchmark. Ordered by score.

Same job does not mean same platform, same country, or same price tier. Check before you switch.

• ArgusAI — ArgusAI is an OpenAI-compatible security gateway for agentic AI applications
• Constellation Gate AI — Constellation Gate AI routes and screens AI agent requests through a single security gateway
• AgentGuard — AgentGuard is a mission-aware firewall that monitors and controls autonomous AI agent actions
• AxioRank — AxioRank is a zero-trust security gateway for AI agents and MCP traffic
• Baur Software — Chrysalis is a self-hosted, zero-trust registry for controlling AI agent access to sensitive code
• Calus — Drop-in AI security gateway that scans prompts and tool responses for threats