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AI · alternatives · 2026

24 alternatives to NICH: GPT Anonymizer

I built NICH after realising I couldn't use ChatGPT for my conflict research work without risking data leaks. It's a browser extension that: - Anonymises names, emails, and addresses in one click - Preserves context for AI to understand - Restores original data in AI responses - 100% browser-based (no cloud, data never leaves your device) Built it for researchers, lawyers, HR professionals or simply anyone handling confidential data who wants AI assistance without compliance nightmares. Free to use: https://www.nichtech.uk Would love feedback from the HN community!

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1

    Your offline personal AI assistant

    2023 · thesamur.ai · its alternatives →

  2. 2

    Your AI privacy protection

    2024 · zerotrusted.ai · its alternatives →

  3. 3

    Privacy firewall for ChatGPT prompts

    2023 · its alternatives →

  4. 4

    AI Toolbox (formerly ChatGPT Toolbox): folders, search, bulk export, and prompt chaining for ChatGPT, Claude, Gemini, and Grok. 40,000+ users. Start free.

    Jul 2026 · ai-toolbox.co · its alternatives →

  5. 5
    CustomGPT▲537

    Build your own ChatBOT

    2023 · customgpt.ai · its alternatives →

  6. 6

    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 · its alternatives →

  7. 7
    Baron AI▲330

    Use ChatGPT in any app, natively on Windows, Mac and Linux

    2023 · its alternatives →

  8. 8
    GPTGuard▲286

    Keep your ChatGPT conversations secure and private

    2024 · gptguard.ai · its alternatives →

  9. 9
    Memoriq▲130

    Archive and search saved conversations from ChatGPT, Claude, Gemini, and Grok in one encrypted AI chat vault.

    Jun 2026 · memoriq.me · its alternatives →

  10. 10

    Custom ChatGPT agents with your own data

    2023 · chaindesk.ai · its alternatives →

  11. 11AL

    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 · its alternatives →

  12. 12

    Captures and stores your chat from various AI platforms

    Mar 2026 · ai-memory-beta.vercel.app · its alternatives →

  13. 13

    A private, on-device AI Chatbot for iOS and macOS

    2023 · privatellm.app · its alternatives →

  14. 14

    Self-hosted alternative to ChatGPT, ChatPDF-like AI tools

    2023 · its alternatives →

  15. 15

    Anonymize PII before sending to ChatGPT, Claude & Gemini

    Mar 2026 · anonym.legal · its alternatives →

  16. 16

    Answers privacy questions with info pulled from your policy

    2020 · getprism.openly.com.au · its alternatives →

  17. 17

    Start using ChatGPT for writing emails with peace of mind

    2023 · emogpt.com · its alternatives →

  18. 18

    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 · its alternatives →

  19. 19

    Back up your ChatGPT, Claude, and Gemini chats locally

    2025 · whatpulse.org · its alternatives →

  20. 20

    Prevent sensitive data leaks in popular LLM's like ChatGPT

    2025 · aisafeguard.co.uk · its alternatives →

  21. 21
    Cloak▲5

    Use ChatGPT without leaking your private data.

    Jan 2026 · getcloak.org · its alternatives →

  22. 22

    Give Claude & ChatGPT the keys to your LinkedIn. Free.

    Sep 2026 · gtm-api.com · its alternatives →

  23. 23

    Monitor your ChatGTP bots conversations across all channels

    2023 · its alternatives →

  24. 24

    Hi everyone, nice to meet you and I am a newcomer of HN. I have made a binary tool Aih that could communicate with Bard, ChatGPT, Claude, and Llama(HuggingChat) from the terminal. https://github.com/Databingo/aih Since CAPTCHA challenges and bots detecting have become increasingly difficult, I've changed my strategy from hacking the APIs to simulating a real browser's action. The tool first takes the logged-in cookies of Google, ChatGPT, Claude, and HuggingChat accounts from the real Chrome browser, then it opens an invisible instance of Chromium for communication, then…

    2023 · github.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →