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Alternatives

Products that do what Privacy Shield Ultra does

100% Local PII Anonymizer for ChatGPT & LLMs.

  1. 1LP

    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

  2. 2

    Privacy firewall for ChatGPT prompts

    2023

  3. 3
    GPTGuard286

    Keep your ChatGPT conversations secure and private

    2024

  4. 4

    Your AI privacy protection

    2024

  5. 5

    Sanitize your AI prompts before you leak secrets.

    Dec 2025 · my-privacy-shield.netlify.app

  6. 6

    Your offline personal AI assistant

    2023

  7. 7

    Stay compliant and redact sensitive data in ChatGPT

    2023

  8. 8
    Tinfoil99

    AI chat and API that keeps your conversations fully private

    Apr 2026 · chat.tinfoil.sh

  9. 9

    Privacy-first bot & spam defense, GDPR compliant CAPTCHA

    2023

  10. 10

    Anonymize PII before sending to ChatGPT, Claude & Gemini

    Mar 2026 · anonym.legal

  11. 11

    Answers privacy questions with info pulled from your policy

    2020

  12. 12AL

    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

  13. 13

    Anonymize client docs before you paste them into AI

    Jul 2026 · promptshield.ca

  14. 14SC

    Hi HN, I’m the founder of Pangea. We’ve built a developer platform where you can easily add security to your code through a simple set of APIs - features like authentication, secrets management, audit logging, redaction of PII, restricting embargoed countries, known threat actor intelligence, etc. With the ChatGPT and LLM explosion, we thought of ways to reduce the risk of both the inputs and outputs from these services. Our NextJS sample app adds a security layer on top of ChatGPT with various security services that you can implement quickly. It’s basically a front end to the OpenAI API…

    2023 · github.com

  15. 15

    Stop leaking personal data to ChatGPT, Claude & Gemini

    Feb 2026 · sentinelle-pii.fr

  16. 16
    Quietly59

    Offline AI IDE & local Chat

    May 2026 · quietlycode.org

  17. 17
    Cloak5

    Use ChatGPT without leaking your private data.

    Jan 2026 · getcloak.org

  18. 18

    Back up your ChatGPT, Claude, and Gemini chats locally

    Oct 2025

  19. 19

    Detect & remove PII from text, files & AI chats. 48 lang.

    Mar 2026 · anonym.legal

  20. 20

    Stop leaking credentials to AI tools. Masks before sending.

    Jun 2026 · buildsys.gumroad.com

  21. 21

    I built the desktop app that detects and redacts personal data (or PII) locally without sending any text to server. It supports rule-based filtering and AI model-based redaction (eg openai privacy filter). It's open source and free. Please check out the repo and https://pii-gui.vercel.app/

    Jun 2026 · github.com

  22. 22

    A private and guest mode for chatGPT

    2025

  23. 23
    GitHub2

    Local sensitive data & API key blocker for ChatGPT.

    Jun 2026 · github.com

  24. 24

    Stop PII from leaking to LLMs—one API call

    Dec 2025 · pii-firewall-edge-web.vercel.app

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