AI · alternatives · 2026
24 alternatives to glc PromptGuard
Stop prompt injection before it reaches your AI agent
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
PromptQL▲411Curating context is a second job nobody wants. PromptQL is the team brain that organizes itself. Work with your team in multiplayer AI threads, and PromptQL turns the context you generate into suggested edits to your wiki - interconnected pages that span skills, knowledge, and the semantic layer. Yo
Jul 2026 · promptql.io · its alternatives →
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AI agents that find, validate, and fix every vulnerability
Jun 2026 · getastra.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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Your agent team, on your machine. Open-source harness for multi-user Claude agents. - yaodub/cast
Jun 2026 · github.com · its alternatives →
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Promptimize AI▲330Your personal prompt engineer across all AI platforms
2025 · promptimizeai.com · its alternatives →
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Prompt Whisperer▲352Simplifying your path to AI interaction
2024 · chatwhisperer.ai · its alternatives →
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PromptLayer is the prompt management platform for AI teams. Version prompts, run LLM evals, and monitor agents in production with tracing, logs, and regression sets.
2023 · promptlayer.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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GitHub▲2Local sensitive data & API key blocker for ChatGPT.
Jun 2026 · github.com · its alternatives →
- 12
Your AI agent hits an infinite loop and racks up $2000 in API charges overnight. This happens weekly to AI developers. AgentGuard monitors API calls in real-time and automatically kills your process when it hits your budget limit. How it works: Add 2 lines to any AI project: const agentGuard = require('agent-guard'); await agentGuard.init({ limit: 50 }); // $50 budget // Your existing code runs unchanged const response = await openai.chat.completions.create({...}); // AgentGuard tracks costs automatically When your code hits $50 in API costs, AgentGuard stops…
2025 · github.com · its alternatives →
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Tiny prompt-injection firewall for LLM chat apps. 14 MB.
May 2026 · github.com · its alternatives →
- 15
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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Prompt injection detection API for AI agents
May 2026 · agentshield.pro · its alternatives →
- 18AM
I made an open source, MIT license Typescript library based on some of the latest research that generates prompt injection attacks. It is a super minimal/lightweight and designed to be super easy to use. Keen to hear your thoughts and please be responsible and only pen test systems where you have permission to pen test!
2025 · prompt-injector.blueprintlab.io · its alternatives →
- 19
New ways of breaking app-integrated LLMs . Contribute to greshake/llm-security development by creating an account on GitHub.
2023 · github.com · its alternatives →
- 20
The AI firewall that understands compliance context
Dec 2025 · promptlock.io · its alternatives →
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Battle-tested AI prompting for working professionals.
May 2026 · prompt-drop.info · its alternatives →
- 23
Prompt-injection firewall for prod LLM apps
Jul 2026 · insightits.com · its alternatives →
- 24RA
Hey everyone! Along with my team, I've developed a reinforcement learning system that automatically optimizes LLM prompts, complete with a visualization feature to track both prompt structure and learning progress over time. Take a look here: https://nomadic-ml.github.io/nomadic/cookbooks/Nomadic_Promp... Check out our website too:https://www.nomadicml.com/ In terms of how this visualization works: The RL Prompt Optimizer employs a reinforcement learning framework to iteratively improve prompts used for language model evaluations. At each episode, the…
2024 · nomadic-ml.github.io · 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 →