Alternatives

Products that do what PhantomWall does

Ship AI safely in minutes.

1
CtrlAI▲104
Transparent proxy that secures AI agents with guardrails
Mar 2026 · github.com
2
Runwall▲9
A Runtime security layer that lets AI agents execute safely
Jul 2026 · runwall.vercel.app
3
The Cloud for AI Agents▲128
Spin up secure sandboxes in ~100 ms
Nov 2025
4
Tinfoil▲99
AI chat and API that keeps your conversations fully private
Apr 2026 · chat.tinfoil.sh
5
AI Hive ▲53
Build, deploy, and run all your AI agents in one platform.
May 2026 · app.aihive.global
6
Foil▲83
An AI agent that monitors your AI agents
Mar 2026 · getfoil.ai
7
Phantoma ▲8
Sovereign AI Infrastructure. Built for Silence.
Jan 2026
8WB
We built an AI to review your pull requests▲53
Hey HN, We’re two developers (co-founders) with a team of 20 who got tired of spending hours reviewing PRs, so we built Infinitcode.ai, an AI-powered code reviewer that: - *Summarizes PRs in plain English*: No more deciphering 1,000-line diff jungles - *Catches more than bugs*: Security holes, performance pitfalls, code smells, even typos (yes, we’ll flag “vurnerabilities” and vulnerabilities) - *Zero onboarding*: Works instantly—no “let me learn your codebase for weeks” nonsense. Why we’re posting: We’re in alpha and need brutal honesty. Roast our tool, mock our UI, or tell us why AI will…
2025 · infinitcode.ai
9PO
Phantom – Open-source AI agent on its own VM that rewrites its config▲18
Mar 2026 · github.com
10
Softprobe▲7
Deploy With Absolute Confidence—From Migration to Releases
Jan 2026 · softprobe.dev
11
Greywall▲10
Local agent sandbox with real-time network control dashboard
Mar 2026 · greywall.io
12IB
I built a firewall for agents because prompt engineering isn't security▲7
Hi HN, I’m the creator of Cordum. I’ve been working in DevOps and infrastructure for years (currently in the fintech/security space), and as I started playing with AI agents, I noticed a scary pattern. Most "safety" mechanisms rely on system prompts ("Please don't do X") or flimsy Python logic inside the agent itself. If we treat agents as autonomous employees, giving them root access and hoping they listen to instructions felt insane to me. I wanted a way to enforce hard constraints that the LLM cannot override, no matter how "jailbroken" it gets. So I built Cordum. It’s an open-source…
Jan 2026 · github.com
13
ShipSecure▲7
Secure what you build from day 1
Oct 2025
14
TokenVeil▲12
Self-hosted AI proxy. Your data never leaves your network.
Jul 2026 · tokenveil.eu
15
PromptLock▲5
The AI firewall that understands compliance context
Dec 2025 · promptlock.io
16
Prompt-injection firewall for AI agents▲3
Block malicious web content before it reaches your AI.
Jan 2026
17
SecuriX▲17
Trust Layer for Autonomous AI
May 2026 · securix.app
18
I built a smart proxy so your coding agent can run loose▲14
The only way to go fast is full YOLO mode in your coding agent. I've got the local sandbox figured out (pro tip: Incus VMs work great) but I wanted to keep my agents from doing things like inadvertently blowing up my cloud services or chasing a prompt to POST to some random website. I struggle most with this on my side projects where my permission model isn't quite as robust as it is at the office. I started with a firewall on the Incus container but every time the agent needed access to something new, I was poking more holes in it - and it didn't differentiate between HTTP verbs. I've been…
Jul 2026 · trollbridge.dev
19
PromptGuard▲3
The firewall for AI prompts. Drop-in security for LLM apps.
Dec 2025 · promptguard.co
20
Context Fence▲8
Runtime firewall for AI coding agents.
8d ago · contextfence.dev
21
Ai-Firewall▲1
Prompt security analysis
Nov 2025
22
Sunglasses▲4
The input firewall for AI agents
Jul 2026 · sunglasses.dev
23
promptShield▲11
Anonymize client docs before you paste them into AI
Jul 2026 · promptshield.ca
24
Shieldelly▲7
Stop malicious AI prompts in 1 API call
2025

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