Alternatives

Products that do what NMB Shadow does

Stop data leaks to AI. Intercept PII & secrets locally

1. 1
   Shadow▲547

   Your personal bot-free AI meeting assistant

   2024

2. 2LP
   Local Privacy Firewall-blocks PII and secrets before ChatGPT sees them▲111

   OP here. I built this because I recently caught myself almost pasting a block of logs containing AWS keys into Claude. The Problem: I need the reasoning capabilities of cloud models (GPT/Claude/Gemini), but I can't trust myself not to accidentally leak PII or secrets. The Solution: A Chrome extension that acts as a local middleware. It intercepts the prompt and runs a local BERT model (via a Python FastAPI backend) to scrub names, emails, and keys before the request leaves the browser. A few notes up front (to set expectations clearly): Everything runs 100% locally. Regex detection…

   Dec 2025 · github.com

3. 3
   Agent Browser Shield▲109

   Block prompt inject & cut token costs for AI browser agents

   Jun 2026 · github.com

4. 4
   ZeroTrusted.ai▲447

   Your AI privacy protection

   2024

5. 5
   Shadow▲219

   The interface AI needs. One that sees, hears, and runs.

   May 2026 · shadow.do

6. 6
   Shadow▲265

   AI that sees, listens, and understands every meeting

   Dec 2025

7. 7
   Tinfoil▲99

   AI chat and API that keeps your conversations fully private

   Apr 2026 · chat.tinfoil.sh

8. 8
   CtrlAI▲104

   Transparent proxy that secures AI agents with guardrails

   Mar 2026

9. 9
   Zero Assist▲108

   Real-time AI cheating detection for technical interviews

   May 2026 · zeroassist.in

10. 10
    Privacy Shield Ultra▲6

    100% Local PII Anonymizer for ChatGPT & LLMs.

    Dec 2025

11. 11
    Sentinelle PII▲2

    Stop leaking personal data to ChatGPT, Claude & Gemini

    Feb 2026

12. 12
    GhostDesk▲88

    Your invisible AI co-pilot for interviews & meetings

    Apr 2026 · ghostdesk-iota.vercel.app

13. 13AL
    A local-first, reversible PII scrubber for AI workflows▲38

    Hi HN, I’m one of the maintainers of Bridge Anonymization. We built this because the existing solutions for translating sensitive user content are insufficient for many of our privacy-concious clients (Governments, Banks, Healthcare, etc.). We couldn't send PII to third-party APIs, but standard redaction destroyed the translation quality. If you scrub "John" to "[PERSON]", the translation engine loses gender context (often defaulting to masculine), which breaks grammatical agreement in languages like French or German. So we built a reversible, local-first pipeline for Node.js/Bun. Here…

    Dec 2025 · medium.com

14. 14
    ShadowAI-Guard▲1

    Zero-trust AI perimeter that masks PII for privacy

    12d ago · shadow-ai-guard-plat-c0ir.bolt.host

15. 15
    AI Visibility▲27

    Check how ChatGPT, Gemini and Claude talk about your brand

    Jul 2026 · aivisibility.pro

16. 16
    AI Safe Chat Guard▲3

    Stop leaking sensitive data to AI chatbots

    Feb 2026

17. 17
    ShadowLock▲3

    Shadow AI detection platform for MSPs and IT teams

    Jul 2026 · shadowlock.io

18. 18
    Shadow AI

    Privacy-first AI: Redact sensitive data before it leaks.

    Mar 2026 · shadowaigateway.com

19. 19
    promptShield▲11

    Anonymize client docs before you paste them into AI

    Jul 2026 · promptshield.ca

20. 20
    Ghostit.online▲3

    Anonymize sensitive data before using AI.

    Jun 2026 · ghostit.online

21. 21
    Shadow AI▲2

    AI spend visibility and control for teams

    13d ago · shadow-ai-usage.vercel.app

22. 22LB
    Local Browser AI▲15

    Using the new Prompt API to build a free open source privacy-first chat extension that runs on Chrome or Edge on Linux, Mac, Windows and ChromeOS

    Oct 2025 · blog.alexewerlof.com

23. 23
    SecuriX▲17

    Trust Layer for Autonomous AI

    May 2026 · securix.app

24. 24
    anonym.legal for Chrome▲1

    Anonymize PII before sending to ChatGPT, Claude & Gemini

    Mar 2026 · anonym.legal

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