AiDren Alternatives
Drop-in security proxy that blocks prompt injection and data leaks in LLM apps by changing one base URL
AiDren is a security proxy for LLM applications.
Explore 9 alternatives to AiDren across 1 category. Updated October 2026.
Top AiDren alternatives at a glance
- HOL Guard. Local-first runtime firewall that intercepts AI coding agent tool calls before they run
- HAIEC. Scans AI application code, runs adversarial tests against live endpoints, and generates signed compliance evidence
- LLM Guard. Open-source input and output scanners for LLM apps; the repository was archived in July 2026
- Redcells. Automated adversarial testing for AI systems you own, with replayable evidence
- Presidio. Microsoft open-source SDK for detecting and anonymizing PII in text and images
Compare AiDren with its alternatives
| Product | Pricing Model | Free Tier | Open Source | Hosting | HQ |
|---|---|---|---|---|---|
| AiDren | Subscription | ✓ | — | — | 🇬🇧 United Kingdom |
| HOL Guard | Freemium | ✓ | ✓ APACHE2 | Self-hosted | — |
| HAIEC | Subscription | ✓ | — | Cloud | 🇺🇸 United States |
| LLM Guard | Free | ✓ | ✓ | Self-hosted | 🇺🇸 United States |
| Redcells | Pay-per-use | — | — | Cloud | — |
| Presidio | Free | ✓ | ✓ | Cloud + Self-hosted | 🇺🇸 United States |
| Guardrails AI | — | ✓ | ✓ | — | — |
| NeMo Guardrails | Free | ✓ | ✓ | Self-hosted | 🇺🇸 United States |
| Cleanlab | — | ✓ | — | — | 🇺🇸 United States |
| Lakera | Contact Sales | ✓ | — | Cloud | 🇺🇸 United States |
📊 Observability & Analytics
Presidio
Microsoft open-source SDK for detecting and anonymizing PII in text and images
Open Source
Free Trial
Guardrails AI
Open-source framework for adding input and output validators around LLM calls
Open Source
Free Trial
NeMo Guardrails
NVIDIA toolkit for adding programmable guardrails to LLM conversational apps
Open Source
Free Trial
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