AI · alternatives · 2026
24 alternatives to Wardstone
Wardstone Guard is an LLM firewall that detects prompt injections, jailbreaks, harmful content, and PII leakage in a single API call with Sub-30ms latency. Free tier available.
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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Lakera Guard▲131Protect your LLM applications with a few lines of code.
2023 · lakera.ai · its alternatives →
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Prompt-injection firewall for prod LLM apps
Jul 2026 · insightits.com · its alternatives →
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Every other gateway is detect-and-block. You don't get a security grade. You don't get red team in CI. We built the one that does. PromptGuard is a proxy: change your base URL (one line with our SDK, or a few lines without), and every request gets checked for prompt injection, PII leaks, jailbreaks, and abuse. 20+ threat vectors, 39+ PII types. We also ship a red team suite and an autonomous agent that mutates attacks to find bypasses - you get a grade (A-F) and a GitHub Action that runs these tests on every PR. So you see where you're weak before you ship. Works with OpenAI, Anthropic,…
Dec 2025 · promptguard.co · its alternatives →
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New ways of breaking app-integrated LLMs . Contribute to greshake/llm-security development by creating an account on GitHub.
2023 · github.com · its alternatives →
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I built this out of curiosity about what Claude Code was actually sending to the API. Turns out, watching your tokens tick up in real-time is oddly satisfying. Sherlock sits between your LLM tools and the API, showing you every request with a live dashboard, and auto-saved copies of every prompt as markdown and json.
Jan 2026 · github.com · its alternatives →
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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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Axios / LiteLLM hacks behavioral detector app for Mac/PC
Apr 2026 · edamame.tech · its alternatives →
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Download Firewall - Spam Call Blocker by Ad Hoc Labs, Inc on the App Store. See screenshots, ratings and reviews, user tips, and more apps like Firewall - Spam…
2019 · apps.apple.com · its alternatives →
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Fast and adaptive security guardrail for AI agents
2025 · guardion.ai · its alternatives →
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Hi HN, Matvey, Ildar, Joey, and Dominik here. If you're building LLM agents that use tools, you're probably worried about prompt injection attacks that can hijack those tools. We were too, and found that solutions like prompt-based filtering or secondary "guard" LLMs can be unreliable. Our thesis is that agent security should be handled at the network level between the agent and the LLM, just like a traditional web application firewall. So we built Archestra Platform: an open-source gateway that acts as a secure proxy for your AI agents. It's designed to be a deterministic firewall against…
2025 · archestra.ai · its alternatives →
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Raptor▲10Hot patch, cache, protect your for LLM API. Built in Rust.
Nov 2025 · raptordata.dev · its alternatives →
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I live in an area with a lot of older folks and I try to talk to them. One thing I've heard is how many of them have been scammed or know people who have gotten conned by phishing, tech support fraud, Medicare schemes, etc. Sometimes even their whole 401k or life savings. It's maddening to think there are individuals in this world taking advantage like that. I built Ward to start to tackle this. It’s a Chrome extension that can either run locally on your machine (with Gemini Nano) or use a hosted cloud-based endpoint. So far, it can pick up on a bunch of the top techniques used with little…
Dec 2025 · tryward.app · its alternatives →
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Ultra-fast, low latency LLM prompt injection/jailbreak detection ⛓️ - arekusandr/last_layer
2024 · github.com · its alternatives →
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Tiny prompt-injection firewall for LLM chat apps. 14 MB.
May 2026 · github.com · its alternatives →
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"Your LLM's last line of defence against the internet."
May 2026 · wonderwallai.skintlabs.ai · its alternatives →
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Private, on-device AI that detects phishing before you tap
Aug 2026 · edgephishguard.web.app · 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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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 →