NeMo Guardrails
NVIDIA toolkit for programmable guardrails via Colang language
Verdict
Unique dialogue-flow approach using Colang DSL. Best for complex multi-turn conversation policies. Steeper learning curve than Guardrails AI but richer for conversation steering.
Other Guardrails & Safety
- Guardrails AIStable
Add input/output validation and safety rails to LLM calls
- Llama Guard 4Stable
Meta's fine-tuned safety classifier for prompt and response screening — now natively multimodal
- RebuffExperimental
Prompt injection detection API for LLM applications
- Microsoft PresidioProduction
Data protection and anonymization for PII in LLM pipelines
- Lakera GuardStable
Real-time prompt injection and jailbreak protection API
- Azure AI Content SafetyProduction
Microsoft's content moderation API for text and images

