AI · alternatives · 2026
24 alternatives to NMB Shadow
Stop data leaks to AI. Intercept PII & secrets locally
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
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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 →
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Mitigate the use of unauthorized AI tools
2025 · chromewebstore.google.com · its alternatives →
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Tinfoil▲99AI chat and API that keeps your conversations fully private
Apr 2026 · chat.tinfoil.sh · its alternatives →
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I've been experimenting with Claude Code, ChatGPT Agent, and OpenClaw to perform more open-ended tasks for me online. A big blocker I've hit on shopping and research tasks is the agent getting a key piece of info wrong. For example, in one case, my agent decided to add a brand I don't like to the cart because the site flagged it as almost sold out The HN crowd is probably pretty aware of the threats and can avoid them while browsing. But what about their agents? I tried prompting, but it was ineffective, because once the AI saw the threat, it polluted/distracted its context Looking at…
Jun 2026 · github.com · its alternatives →
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CtrlAI▲104Transparent proxy that secures AI agents with guardrails
Mar 2026 · github.com · its alternatives →
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Zero Assist▲108Real-time AI cheating detection for technical interviews
May 2026 · zeroassist.in · its alternatives →
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Stop leaking personal data to ChatGPT, Claude & Gemini
Feb 2026 · sentinelle-pii.fr · its alternatives →
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AI Safeguard▲14Prevent sensitive data leaks in popular LLM's like ChatGPT
2025 · aisafeguard.co.uk · its alternatives →
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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 →
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Zero-trust AI perimeter that masks PII for privacy
Aug 2026 · shadow-ai-guard-plat-c0ir.bolt.host · its alternatives →
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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!
2025 · nichtech.uk · its alternatives →
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Stop leaking sensitive data to AI chatbots
Feb 2026 · chromewebstore.google.com · its alternatives →
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Shadow AI detection platform for MSPs and IT teams
Jul 2026 · shadowlock.io · its alternatives →
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Privacy-first AI: Redact sensitive data before it leaks.
Mar 2026 · shadowaigateway.com · its alternatives →
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promptShield▲11Anonymize client docs before you paste them into AI
Jul 2026 · promptshield.ca · its alternatives →
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Anonymize sensitive data before using AI.
Jun 2026 · ghostit.online · its alternatives →
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Fix shadowbans on Twitter, Instagram, Email & websites!
2025 · studio--shadowscanai.us-central1.hosted.app · its alternatives →
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AI spend visibility and control for teams
Aug 2026 · shadow-ai-usage.vercel.app · its alternatives →
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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
2025 · blog.alexewerlof.com · its alternatives →
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Verify ChatGPT, Claude, Gemini, Perplexity in real time.
Nov 2025 · hyde.bot · 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 →