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Products that do what PIIGhost does

Keep personal data out of your LLM prompts

  1. 1
    Hermit147

    Leave ChatGPT while keeping everything it learned about you

    Mar 2026

  2. 2

    Privacy firewall for ChatGPT prompts

    2023

  3. 3

    Get your brand mentioned by ChatGPT, Gemini + other AI/LLMs

    2025

  4. 4
    YourGPT164

    Use LLMs with your API key on your phone

    2024

  5. 5
    Memoriq130

    Your private AI memory for ChatGPT, Claude, Gemini and Grok

    Jun 2026

  6. 6

    A single memory for all your LLMs

    Nov 2025

  7. 7
    ChattyUI149

    Run open-source LLMs locally in the browser using WebGPU

    2024

  8. 8
    GPTRecap134

    The Spotify Wrapped of ChatGPT. See your AI life.

    2025

  9. 9
    Verol98

    Stop AI hallucinations

    Jun 2026

  10. 10
    noirdoc96

    PII guard for Claude Code to keep client data out of context

    Apr 2026

  11. 11
    Perssua61

    Real-time guidance from any LLM (including local ones)

    Nov 2025

  12. 12
    Lapis79

    Secure, offline AI chat assistant on your device

    Nov 2025

  13. 13

    Shared persistent memory across all your LLMs.

    Sep 2025

  14. 14GV

    Hey HN, I just updated my project that compares some LLMs. It uses your prompt for all the models and runs at the same time. You can see the results being generated in real-time and decide what's the best for your use case. I'm open to any suggestions and feedback. Thanks!

    2024 · geminivsgpt.com

  15. 15CF

    Over this past month I had the idea to build a 100% open-source MIT-licensed tool to simplify sharing code with LLMs, without the vendor lock-in you get from most SDKs. Right now, it’s way too hard to export your data or work freely with models like o1 PRO or Grok 3, especially since they don’t even have API access. So I built OpenRepoPrompt, an open-source tool from wildberry-source that serializes files and folders into XML for LLMs. I coded/designed from 12PM -> 11PM on Saturday and 8AM -> 11PM on Sunday. There are still tons of features missing (I'm working on better file filtering…

    2025 · github.com

  16. 16AL

    Hi HN! I wanted to share my freshly finished open-source project. It is similar to ChatGPT Code Interpreter, but the interpreter runs locally and it can use open-source models like Llama 2. It allows you to work with sensitive data without uploading it to the cloud. Either you use a local LLM (like Llama 2), or an API (like GPT-4). For the latter case, there is an approval mechanism in the UI, which separates your local data from the remote services. I would be very interested in your valuable feedback!

    2023 · github.com

  17. 17LO

    Hi HN! I built LLM OneStop (https://www.llmonestop.com), a unified interface for accessing multiple AI language models in one place. The main problem I wanted to solve: constantly switching between different AI platforms, managing multiple subscriptions, and losing conversation context when comparing outputs across models. Key features: Switch between GPT-4, Claude, Gemini, Llama, and other models mid-conversation Compare responses side-by-side Single interface instead of juggling multiple tabs/subscriptions Free tier available to try it out (no credit card needed) "Connect"…

    Nov 2025 · llmonestop.com

  18. 18

    Keep client data out of ChatGPT - DLP built for SMEs

    Aug 2026 · privasee.fr

  19. 19LT

    Introducing Lailaims: An open source client-side web app that lets you test multiple LLM providers (GPT-4, Claude, Gemini, Mistral, DeepSeek) side-by-side in one interface. Your data stays private - everything runs locally in your browser! Video example: https://vimeo.com/1084976999/8687b63f85

    2025 · lailaims.pages.dev

  20. 20LS

    I kept running into this annoying problem: I’d remember a really useful answer, but not where it was. ChatGPT? Claude? Gemini? No idea. So I’d end up digging through all of them or just rewriting the prompt. Built this to fix that. It’s a Chrome extension that indexes chats locally and lets you search across them all in one place. Once it’s indexed, search is basically instant. Still early. UIs change and break things sometimes, so it’s a bit fragile in places. Curious if other people have the same issue or if it’s just me jumping between tools too much.

    Apr 2026 · chromewebstore.google.com

  21. 21CL

    With the right technique, I was able to break the so-called secure models like Claude and OpenAI. So, I built an open-source tool to automate this and find security holes in any hosted model. I got claude-sonnet-4 to demonstrate the following harmful behavior: - steal data from downstream tool calls using sql injection, code injection and template injection attacks - install spyware or malware using prompt obfuscation to send data to a third-party server Try it yourself with this simple command: pip install compliant-llm && compliant-llm dashboard

    2025 · github.com

  22. 22TO

    I built TraceAIO, an open-source tool that prompts LLMs on your behalf and tells you whether ChatGPT, Perplexity, and Gemini mention your brand — and which competitors and sources show up instead. Yeah, this category smells a bit like a grift, same as early SEO. And I think over time it will become just SEO again, and become about good content. The tool just helps you monitor over time. It queries the browser products through real browser sessions, not APIs, runs on Docker, with an MCP server so you can query your own data through an LLM. No business model, Apache 2.0, self hosted. If you…

    Jun 2026 · traceaio.org

  23. 23LC

    I use the following custom instruction to maximise honest, accurate, factual responses and decrease sycophancy in LLMs that support custom instructions. Below I have provided instructions on how to achieve this in Gemini and ChatGPT. Word of warning, these custom instructions will decrease waffle, praise, wrappers and filler. But they will remove all warmth and engagement. The output can become quite ruthless. For ChatGPT 1. Visit https://chatgpt.com/ 2. Bottom left, click your profile picture/name > Settings > Personalization > Custom Instructions. 3. What traits should…

    2025

  24. 24

    Redact PII locally and in realtime before it leaks to GenAI.

    8d ago · dataanonymiser.com

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