AI · alternatives · 2026
24 alternatives to GuardLink
Threat modelling at the speed of code
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier.
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Kastrafree tier, from $19.99/mo▲332Hi HN, Fernando and I built Kastra. Kastra intercepts AI agent tool calls and evaluates them against deterministic policies before they execute. We built this product to control pre- and post-inference workloads. This is aimed at developers using coding agents like Claude Code, Codex, Cursor, and OpenClaw. Kastra pushes an allow, hold, and deny decision before the action runs. You can build these policies in plain English from the web app. The interception engine evaluates the tools, targets, and parameters of every action at sub 1ms at a scale of billions of interceptions per day. We also…
Jul 2026 · kastra.ai · its alternatives →
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- 3FL
Hi HN! We just launched Codacy Guardrails, an IDE extension with a CLI for code analysis and MCP server that enforces security & quality rules on AI-generated code in real-time. It hooks into AI coding assistants (like VS Code Agent Mode, Cursor, Windsurf), silently scanning and fixing AI-suggested code that has vulnerabilities or violates your coding standards, while the code it’s being generated. We built this because coding agents can be a double-edged sword. They do boost productivity, but can easily introduce insecure or non-compliant code. One recent research team at NYU found that 40%…
2025 · its alternatives →
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GuardRails▲66Continuous security feedback for your repositories.
2020 · guardrails.io · its alternatives →
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Shieldstral▲104Define safety at runtime for text and images
Aug 2026 · mistral.ai · its alternatives →
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Small team down here in South New Zealand just launched CodeLink. In short its an IDE (VSCode/JetBrains) plugin that lets you share blocks of code that link directly to the code inside your IDE or repo. We use it all the time and think its pretty nifty tech that lets you understand someone’s code in context very quickly. we’re hoping to keep refining it to make it better and more useful.
2022 · codelink.dev · its alternatives →
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Open safety reasoning models with custom safety policies
Oct 2025 · openai.com · its alternatives →
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Open sourced application to detect security vulnerabilities.
2020 · github.com · its alternatives →
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7 layers between your AI agents and disaster.
Feb 2026 · takeinterest.ai · 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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ThreatSlayer▲85Free enterprise grade security for your personal browser
2023 · chromewebstore.google.com · its alternatives →
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ThreatStream▲60Real-time intelligence to defend a network from cyber threat
2014 · anomali.com · its alternatives →
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SafeDep Vet▲72GitLab CI Component that lets you seamlessly protect your pipelines from vulnerable and malicious open source dependencies. The component integrates directly into your CI/CD workflow through the GitLab CI Catalog and allows you to establish policy-driven guardrails using Common Expression Language (CEL). Key features: - Set your own opinionated security policies as code using CEL - Detect and block risky OSS components before they enter your codebase - Seamless integration as a native GitLab CI Component - Available directly in the GitLab CI Catalog Try and lets us know our thoughts!
2023 · safedep.io · its alternatives →
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Automated security assistant for developers
2020 · shieldfy.io · its alternatives →
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An information-flow policy engine for LLM agents.
24d ago · openappa.com · its alternatives →
- 20CG
There is a growing problem with VSCode extensions: - they're not sandboxed (yet) - just like double-clicking an .exe file - they don't have a permission model - they auto update - they have built-in persistence - they are installed on developer machines with high-value credentials The recent CircleCI and LastPass incidents were both suspected to originate from a compromised developer machine - which is becoming every organization's Achilles heel in terms of cyber posture So I've been working on a way to help mitigate some of these risks Right now, only an MVP of a "CLI" is available: $ code…
2023 · its alternatives →
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Fast and adaptive security guardrail for AI agents
2025 · guardion.ai · its alternatives →
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skillgaurd▲11Detect Security Threats in Agent Skills
Jan 2026 · skillgaurd.up.railway.app · its alternatives →
- 24
Open-source pre-execution security for AI coding agents - FvdHMBAI/guardrail
Sep 2026 · 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 →