nowfound

AI · alternatives · 2026

24 alternatives to Doberman

The guard dog to stop your AI when it goes rogue.

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 4 we have checked on their own sites, 4 of them free or with a free tier.

  1. 1

    Landing Page: https://www.trydoberman.dev/ The Problem: AI guardrails only protect against 89% of dangerous commands. This may seem pretty good until you think of it as a lock that lets 1 in 9 intruders in. What is Doberman: Doberman is a two layer security system wrapped around your LLM monitoring every input, output and tool call. The first layer is deterministic based on state of the art security guidelines, the second layer is dynamic, learning from your use and personal preferences. How is Doberman different: It is a dynamic two-layer security system that sits at runtime…

    Aug 2026 · github.com · its alternatives →

  2. 2
    Harness by Autonomousfree tier, from $149/mo▲295

    Every coding agent, every machine, one command center.

    9d ago · autonomous.ai · its alternatives →

  3. 3
    OpenHuman▲549

    An open source AI harness built with the human in mind

    May 2026 · tinyhumans.ai · its alternatives →

  4. 4
    Venn.ai▲336

    Delegate real work to AI agents with safety guardrails

    Mar 2026 · venn.ai · its alternatives →

  5. 5
    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 →

  6. 6

    The AI-Powered Antivirus for AI Agents

    Mar 2026 · clawsecure.ai · its alternatives →

  7. 7
    HOL Guard▲106

    The 1st Firewall for AI Agents

    Jul 2026 · hol.org · its alternatives →

  8. 8

    A lightweight, single-binary coding agent harness written in Go. Anthropic, OpenAI, Kimi, DeepSeek, Google Gemini, Ollama, managed llama.cpp models, five built-in tools, three run modes, extensions in any language, and a built-in Telegram bridge.

    May 2026 · zot.sh · its alternatives →

  9. 9
    Viberia▲146

    Hey HN, This is my take on the agent harness. Everything on an isometric map. Agents are grouped into "buildings" that run in a sequence or a loop; e.g., the CodeForge has an agent that writes a PRD, another one that implements, and a third that reviews. Everything is customizable, you build your own buildings/teams however you want. It's a Tauri app, really light (about 8x less energy than the closest competitor I benchmarked, so it actually runs from a coffee shop on battery). It's macOS only for now, but ping me if you are willing to test the Windows or Linux version. I've been…

    May 2026 · getviberia.com · its alternatives →

  10. 10
    CtrlAI▲104

    Transparent proxy that secures AI agents with guardrails

    Mar 2026 · github.com · its alternatives →

  11. 11
    Foil▲83

    An AI agent that monitors your AI agents

    Mar 2026 · getfoil.ai · its alternatives →

  12. 12FL

    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 →

  13. 13

    Runtime firewall for AI coding agents.

    Aug 2026 · contextfence.dev · its alternatives →

  14. 14

    Open-source malware scanner and runtime guard for AI agents

    Jul 2026 · panguard.ai · its alternatives →

  15. 15

    An information-flow policy engine for LLM agents.

    26d ago · openappa.com · its alternatives →

  16. 16
    Runwallfree tier▲9

    A Runtime security layer that lets AI agents execute safely

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

  17. 17

    At my last company, we connected Claude Code and Cursor to almost all our internal services via MCP. It made the team incredibly fast, but we hit a wall: permissions. If you give an agent "Read Only" access, it can’t actually fix anything. If you give it "Write" access, it’s only a matter of time before a hallucination or a bad prompt results in a deleted database or a nuked production bucket. We had a few "close calls" that convinced us that simply reducing IAM permissions makes agents useless. I built Armour (https://github.com/fuushyn/armour) to solve this. It’s a…

    Jan 2026 · github.com · its alternatives →

  18. 18

    Open-source pre-execution security for AI coding agents - FvdHMBAI/guardrail

    Sep 2026 · github.com · its alternatives →

  19. 19

    Your agent team, on your machine. Open-source harness for multi-user Claude agents. - yaodub/cast

    Jun 2026 · github.com · its alternatives →

  20. 20

    Open Source Reliability Harness: Make your agents follow rules. One line of code to‎ ‎enforce, trace, and improve. ‎ ‎ - GitHub - open-bias/open-bias: Open Source Reliability Harness: Make your agents follow rules. One line of code to‎ ‎enforce, trace, and improve. ‎ ‎

    Apr 2026 · github.com · its alternatives →

  21. 21

    Open-source AI coworkers that each get a computer of their own: a browser, files and tools, with every action decided before it happens and recorded after. Bring any AG-UI agent. - CopilotKit/OpenBot

    Aug 2026 · github.com · its alternatives →

  22. 22

    Desktop pets for AI coding agents.

    May 2026 · openpets.dev · its alternatives →

  23. 23

    7 layers between your AI agents and disaster.

    Feb 2026 · takeinterest.ai · its alternatives →

  24. 24

    Stop AI agents from installing malicious packages.

    Jul 2026 · agentinel.habitwala.in · 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 →