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Best Fiddler Guardrails Alternatives in 2026

Updated

20 apps from AI guardrail software ranked against Fiddler Guardrails on the same published basis.

  1. 1
    PromptGuard Free plan apiextensionLinuxMacself-hosted $19/mo7.3
    Fiddler Guardrails vs PromptGuard
  2. 2
    Enkrypt AI Guardrails Free plan apiself-hostedWeb $134/mo7.0
    Fiddler Guardrails vs Enkrypt AI Guardrails
  3. 3
    OpenSecureAI Prompt Firewall Free plan self-hostedWeb $49/mo7.0
    Fiddler Guardrails vs OpenSecureAI Prompt Firewall
  4. 5
    Amazon Bedrock Guardrails Web $0.07/mo6.8
    Fiddler Guardrails vs Amazon Bedrock Guardrails
  5. 6
    Openlayer Guardrails Free plan apiself-hostedWeb Free6.8
    Fiddler Guardrails vs Openlayer Guardrails
  6. 7
    HiddenLayer AI Runtime Security apiLinuxself-hostedWeb 6.5
    Fiddler Guardrails vs HiddenLayer AI Runtime Security
  7. 8
    OpenAI Guardrails apiself-hostedWeb 6.4
    Fiddler Guardrails vs OpenAI Guardrails
  8. 9
    Guardrails AI apiself-hostedWeb 6.3
    Fiddler Guardrails vs Guardrails AI
  9. 10
    Pangea AI Guard apiextensionself-hosted 6.3
    Fiddler Guardrails vs Pangea AI Guard
  10. 11
    Radware Alteon apiLinuxself-hostedWeb 6.3
    Fiddler Guardrails vs Radware Alteon
  11. 12
    OpenGuardrails apiself-hostedWeb $10/mo6.1
    Fiddler Guardrails vs OpenGuardrails
  12. 13
    Oracle Mobile Authenticator AndroidiOSWin 6.1
    Fiddler Guardrails vs Oracle Mobile Authenticator
  13. 14
    Microsoft Custom Neural Voice Web 5.8
    Fiddler Guardrails vs Microsoft Custom Neural Voice
  14. 15
    PII Firewall Free plan Linuxself-hosted Free5.7
    Fiddler Guardrails vs PII Firewall
  15. 16
    Amazon Nova ReelAmazon Web Services apiWeb 5.6
    Fiddler Guardrails vs Amazon Nova Reel
  16. 17
    Check Point AI Guardrails Web 5.6
    Fiddler Guardrails vs Check Point AI Guardrails
  17. 18
    NVIDIA NeMo Guardrails 5.2
    Fiddler Guardrails vs NVIDIA NeMo Guardrails
  18. 19
    VotalAI Free trial apiself-hostedWeb 5.2
    Fiddler Guardrails vs VotalAI
  19. 20
    CyberSecEval 5.1
    Fiddler Guardrails vs CyberSecEval
  20. 21
    LLM Guard 4.8
    Fiddler Guardrails vs LLM Guard

Fiddler Guardrails alternatives compared

#AppScoreFree planFromRuns on
1PromptGuard7.3Free plan$19/moAPI, Browser, Linux, Mac, self-hosted, Web, Windows
2Enkrypt AI Guardrails7.0Free plan$134/moAPI, self-hosted, Web
3OpenSecureAI Prompt Firewall7.0Free plan$49/moself-hosted, Web
5Amazon Bedrock Guardrails6.8No$0.07/moWeb
6Openlayer Guardrails6.8Free planFreeAPI, self-hosted, Web
7HiddenLayer AI Runtime Security6.5No—API, Linux, self-hosted, Web
8OpenAI Guardrails6.4No—API, self-hosted, Web
9Guardrails AI6.3No—API, self-hosted, Web
10Pangea AI Guard6.3No—API, Browser, self-hosted
11Radware Alteon6.3No—API, Linux, self-hosted, Web
12OpenGuardrails6.1No$10/moAPI, self-hosted, Web
13Oracle Mobile Authenticator6.1No—Android, iOS, Windows
14Microsoft Custom Neural Voice5.8No—Web
15PII Firewall5.7Free planFreeLinux, self-hosted
16Amazon Nova Reel5.6No—API, Web
17Check Point AI Guardrails5.6No—Web
18NVIDIA NeMo Guardrails5.2No——
19VotalAI5.2No—API, self-hosted, Web
20CyberSecEval5.1No——
21LLM Guard4.8No——
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Questions about Fiddler Guardrails alternatives

What is the best alternative to Fiddler Guardrails?

PromptGuard, number 1 in AI guardrail software with a score of 7.3 out of 10. The others here: Enkrypt AI Guardrails, OpenSecureAI Prompt Firewall, Amazon Bedrock Guardrails and 16 more.

What is the best free alternative to Fiddler Guardrails?

PromptGuard is the best-ranked alternative with a free plan. 5 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on.