nowfound

AI · alternatives · 2026

24 alternatives to Kavach

Tactical Zero-Trust OS Firewall for Local AI Agents

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 2 we have checked on their own sites, 2 of them free or with a free tier.

  1. 1
    HOL Guard▲106

    The 1st Firewall for AI Agents

    Jul 2026 · hol.org · its alternatives →

  2. 2

    Your AI privacy protection

    2024 · zerotrusted.ai · its alternatives →

  3. 3
    Kastrafree tier, from $19.99/mo▲332

    Hi 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 →

  4. 4

    Zero-trust security gateway for AI agents

    Jun 2026 · solongate.com · its alternatives →

  5. 5

    Real-time AI cheating detection for technical interviews

    May 2026 · zeroassist.in · its alternatives →

  6. 6

    Self-hosted AI agent that connects 1000+ apps on Vercel

    May 2026 · github.com · its alternatives →

  7. 7
    0dAI▲62

    AI-driven ally for advanced cybersecurity defense

    2024 · its alternatives →

  8. 8

    Build & scale AI \ agents as microservices with IAM

    Dec 2025 · agentfield.ai · its alternatives →

  9. 9

    Security middleware for AI agents and MCP servers

    Jun 2026 · pypi.org · its alternatives →

  10. 10
    SecuriX▲17

    Trust Layer for Autonomous AI

    May 2026 · securix.app · its alternatives →

  11. 11

    Open Source deterministic security Firewall for AI agents

    May 2026 · supra-wall.com · its alternatives →

  12. 12

    The 0.18ms Zero-Trust AI Firewall for Enterprise Agents.

    Aug 2026 · atillayalcin.ai · its alternatives →

  13. 13
    AgentZ▲3

    Zero Trust Platform to Build, Run Govern AI Agents

    Aug 2026 · accuknox.com · its alternatives →

  14. 14

    The Zero-Trust Firewall for AI Agents (Join the Beta)

    Mar 2026 · its alternatives →

  15. 15

    Open Source Local AI Firewall

    Feb 2026 · github.com · its alternatives →

  16. 16

    Internet Defense Strategy with AI Technology

    2024 · its alternatives →

  17. 17

    Runtime firewall for AI coding agents.

    Aug 2026 · contextfence.dev · its alternatives →

  18. 18

    A zero-trust security layer between your apps and LLMs

    Jan 2026 · its alternatives →

  19. 19
    Runwallfree tier▲9

    A Runtime security layer that lets AI agents execute safely

    Jul 2026 · runwall.vercel.app · its alternatives →

  20. 20

    Security firewall for AI agents. Cloudflare for MCP.

    Feb 2026 · agent-wall.github.io · its alternatives →

  21. 21

    Ship AI safely in minutes.

    2025 · phantomwall.vercel.app · its alternatives →

  22. 22

    Real-time governance firewall for autonomous AI agents

    May 2026 · gateplex.ai · its alternatives →

  23. 23

    AI-powered firewall that instantly blocks malicious Web3.

    Jul 2026 · guardfast.vercel.app · its alternatives →

  24. 24
    Kakunin▲20

    Cryptographic identity for autonomous AI agents

    May 2026 · kakunin.ai · its alternatives →

Also compare

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 →