AITerm vs ngrok: which should you use for AI development?

Both solve NAT traversal. But one is a purpose-built AI terminal; the other is a generic tunnel. Here's which one fits your workflow.

What each does

AITerm

AITerm is a multi-AI terminal SaaS. You install a lightweight open-source connector on each machine; it connects outbound to aiterm.io over WebSocket+TLS. You open any browser — including your phone — to reach a full xterm.js terminal running Claude Code, Ollama, llama.cpp, LM Studio, vLLM, GPT4All, or plain bash. Sessions persist across connector restarts. The connector is MIT-licensed.

ngrok

ngrok is a reverse-tunnel service. You install the ngrok client, run ngrok http 3000 (or similar), and ngrok hands you a public URL that tunnels traffic to your local port. Popular for demoing web apps, testing webhooks, and exposing local APIs.

How they differ in practice

	AITerm	ngrok
Primary use case	Browser access to AI tools & shell	Exposing arbitrary ports
Mobile-friendly UI	Yes (xterm.js touch support)	Depends what you tunnel
Multi-AI scan	Built-in	N/A
Session persistence	PTY manager survives connector restarts	Depends on the exposed app
Team sharing	View-invites + share links	Paid tiers only
Protocol exposed	WebSocket over TLS, paired sessions only	HTTP / TCP / TLS
Attack surface	Paired AI sessions only	Whatever port you tunnel
Auth model	Per-machine token + browser session	OAuth + optional basic auth
Free tier	5 machines, 1 user, unlimited sessions	1 static domain, 1 endpoint
Paid tier	€9 / user / month	$10 / month personal
Open source	Connector is MIT	Client is source-available, not OSS
Self-hostable	Connector-configurable hub_url	No (official service only)

Security scope

The biggest practical difference is what a leaked credential gives away.

• A leaked AITerm pairing token gives the attacker access to the paired machine's AI sessions — nothing else on the host (unless a bash session happens to be open at the time).
• A leaked ngrok tunnel URL gives the attacker access to whatever port was exposed. If that port was an unauthenticated local admin UI, game over.

Both services use TLS. AITerm additionally pins the hub certificate (TOFU) and Ed25519-signs update manifests to prevent a compromised hub from pushing malicious code.

When to pick which

In real teams we see both: ngrok for the web-dev side, AITerm for the AI side. They don't overlap as much as it first looks.

FAQ

Can ngrok do what AITerm does?

Technically yes — expose a port running ttyd, gotty, or similar browser-based terminal, wrap it with HTTP basic auth, and mount your AI CLIs. In practice you end up rebuilding AITerm's UI, session management, scanning, pairing, and team-sharing from scratch. Many developers try this route and switch to AITerm after their third "why can't I upload a file" moment.

Can AITerm do what ngrok does?

No. AITerm only exposes paired terminal sessions. It isn't a generic reverse proxy and intentionally won't tunnel arbitrary ports — that would widen the attack surface and blur the product.

What about security on mobile?

AITerm's browser UI works on Safari and Chrome on phones without any app install. Authentication is the same as desktop (email + password, session cookie). No SSH client needed — SSH on mobile generally requires a paid app (Termius, Blink Shell) and a painful setup.